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Relevant bibliographies by topics / Parasite morphology

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Academic literature on the topic 'Parasite morphology'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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Journal articles on the topic "Parasite morphology"

1

Rahimian, Hassan. "Parasites of fingerling herringClupea harengusL.: ecology and fine morphology." Journal of Helminthology 81, no. 2 (June 2007): 199–217. http://dx.doi.org/10.1017/s0022149x07735381.

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AbstractThe parasite fauna of young-of-the-year herringClupea harengusL., off Gullmarsfjord and Brofjorden, west coast of Sweden, was studied between May and October for 4 years, from 1994 to 1997. Fifteen species of parasites were found: two Protozoa –Trichodina sp.andCeratomyxa auerbachi; one species of uncertain affinity –Ichthyophonus hoferi; two Monogenea –Gyrodactylus harengiandPseudanthocotyloides heterocotyle; five Digenea –Cryptocotyle linguametacercariae,Cercaria pythionikemetacercariae,Hemiurus luehei,Lecithaster confususandPseudobacciger harengulae; three Cestoda plerocercoids –Bothriocephalussp., an acrobothriid and a tetraphyllid; one Nematoda –Hysterothylacium aduncumlarva; and one Copepoda –Caligus elongatus. The number of species found in this study represents more than one-sixth of all parasites reported in herring worldwide and all parasites were acquired locally. The parasite fauna of herring from the west coast of Sweden is compared with that of herring from the Baltic Sea and other areas of the north-east Atlantic. The prevalence and intensity of parasites are presented and discussed. Morphological descriptions are based on both light and scanning electron microscopy and new features are described. Possible applications of this new information about the parasite fauna, in different areas of fisheries and fish biology studies, are discussed.

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GRUBER, JANINE, PETRA GANAS, and MICHAEL HESS. "Long-term in vitro cultivation of Histomonas meleagridis coincides with the dominance of a very distinct phenotype of the parasite exhibiting increased tenacity and improved cell yields." Parasitology 144, no. 9 (May 8, 2017): 1253–63. http://dx.doi.org/10.1017/s0031182017000646.

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SUMMARYThe majority of research on Histomonas meleagridis was performed in the first half of the last century, especially those on morphological aspects. In the present study identical monoxenic settings for cultures of the same H. meleagridis clonal strain in its virulent low passage and attenuated high passage form enabled a comparative analysis of parasite characteristics. For the first time, it could be shown that long-term in vitro cultivation led to a severe shift in cell morphology, with the occurrence of a very distinct phenotype expressing a flagellated and highly amoebic cell morphology. Furthermore, the attenuated parasites showed better growth rates and a higher tenacity when confronted with adverse conditions. During these experiments up to 100% of the parasites, both virulent and attenuated, assumed a completely rounded morphology elucidated by electron microscopy. The findings indicate that such previously reported cyst-like stages are a defence strategy of H. meleagridis, independent of the passage level in vitro and pathogenicity in vivo. In conclusion, long-term in vitro passaging of H. meleagridis led not only to an attenuation of the parasite, as previously demonstrated, but also to a shift in the parasite's phenotype regarding morphology, growth behaviour and a higher level of tenacity.

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PERKINS, S. L., E. S. MARTINSEN, and B. G. FALK. "Do molecules matter more than morphology? Promises and pitfalls in parasites." Parasitology 138, no. 13 (June 9, 2011): 1664–74. http://dx.doi.org/10.1017/s0031182011000679.

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SUMMARYSystematics involves resolving both the taxonomy and phylogenetic placement of organisms. We review the advantages and disadvantages of the two kinds of information commonly used for such inferences – morphological and molecular data – as applied to the systematics of metazoan parasites generally, with special attention to the malaria parasites. The problems that potentially confound the use of morphology in parasites include challenges to consistent specimen preservation, plasticity of features depending on hosts or other environmental factors, and morphological convergence. Molecular characters such as DNA sequences present an alternative data source and are particularly useful when not all the parasite's life stages are present or when parasitaemia is low. Nonetheless, molecular data can bring challenges that include troublesome DNA isolation, paralogous gene copies, difficulty in developing molecular markers, and preferential amplification in mixed species infections. Given the differential benefits and shortcomings of both molecular and morphological characters, both should be implemented in parasite taxonomy and phylogenetics.

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Öktener, Ahmet. "Morphology of Lernanthropinus trachuri ()(Copepoda, Siphonostomatoida, Lernanthropidae) from Bandirma Bay(Turkey)." Transylvanian Review of Systematical and Ecological Research 20, no. 3 (March 1, 2018): 57–66. http://dx.doi.org/10.2478/trser-2018-0019.

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Abstract The parasitic copepod, Lernanthropinus trachuri (Brian, 1903) (Copepoda, Siphonostomatoida, Lernanthropidae)was found on the Mediterranean horse mackerel, Trachurus mediterraneus in Bandırma Bay, Turkey. The aim of this study is to present female Lernanthropinus trachuri with morphological characters with photos from Turkey. The details unseen in photos were supported with drawings. All parasites were firmly attached to the gill filaments of the host. This parasite is also specific for the genus Trachurus (Costa et al 2017). Therefore, this parasite may use as biomonitor or tag species for fish stock studies in Turkey.

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Sweet, Andrew D., Sarah E. Bush, Daniel R. Gustafsson, Julie M. Allen, Emily DiBlasi, Heather R. Skeen, Jason D. Weckstein, and Kevin P. Johnson. "Host and parasite morphology influence congruence between host and parasite phylogenies." International Journal for Parasitology 48, no. 8 (July 2018): 641–48. http://dx.doi.org/10.1016/j.ijpara.2018.01.007.

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Coppens, Isabelle. "Metamorphoses of malaria: the role of autophagy in parasite differentiation." Essays in Biochemistry 51 (October 24, 2011): 127–36. http://dx.doi.org/10.1042/bse0510127.

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Several protozoan parasites undergo a complex life cycle that alternates between an invertebrate vector and a vertebrate host. Adaptations to these different environments by the parasites are achieved by drastic changes in their morphology and metabolism. The malaria parasites must be transmitted to a mammal from a mosquito as part of their life cycle. Upon entering the mammalian host, extracellular malaria sporozoites reach the liver and invade hepatocytes, wherein they meet the challenge of becoming replication-competent schizonts. During the process of conversion, the sporozoite selectively discards organelles that are unnecessary for the parasite growth in liver cells. Among the organelles that are cleared from the sporozoite are the micronemes, abundant secretory vesicles that facilitate the adhesion of the parasite to hepatocytes. Organelles specialized in sporozoite motility and structure, such as the inner membrane complex (a major component of the motile parasite's cytoskeleton), are also eliminated from converting parasites. The high degree of sophistication of the metamorphosis that occurs at the onset of the liver-form development cascade suggests that the observed changes must be multifactorial. Among the mechanisms implicated in the elimination of sporozoite organelles, the degradative process called autophagy contributes to the remodelling of the parasite interior and the production of replicative liver forms. In a broader context, the importance of the role played by autophagy during the differentiation of protozoan parasites that cycle between insects and vertebrates is nowadays clearly emerging. An exciting prospect derived from these observations is that the parasite proteins involved in the autophagic process may represent new targets for drug development.

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Sanyal, Sohini, Stéphane Egée, Guillaume Bouyer, Sylvie Perrot, Innocent Safeukui, Emmanuel Bischoff, Pierre Buffet, et al. "Plasmodium falciparum STEVOR proteins impact erythrocyte mechanical properties." Blood 119, no. 2 (January 12, 2012): e1-e8. http://dx.doi.org/10.1182/blood-2011-08-370734.

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Infection of erythrocytes with the human malaria parasite, Plasmodium falciparum, results in dramatic changes to the host cell structure and morphology. The predicted functional localization of the STEVOR proteins at the erythrocyte surface suggests that they may be involved in parasite-induced modifications of the erythrocyte membrane during parasite development. To address the biologic function of STEVOR proteins, we subjected a panel of stevor transgenic parasites and wild-type clonal lines exhibiting different expression levels for stevor genes to functional assays exploring parasite-induced modifications of the erythrocyte membrane. Using this approach, we show that stevor expression impacts deformability of the erythrocyte membrane. This process may facilitate parasite sequestration in deep tissue vasculature.

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WOOTTON, EMMA C., EDWARD C. POPE, CLAIRE L. VOGAN, EMILY C. ROBERTS, CHARLOTTE E. DAVIES, and ANDREW F. ROWLEY. "Morphology and pathology of the ectoparasitic copepod, Nicothoë astaci (‘lobster louse’) in the European lobster, Homarus gammarus." Parasitology 138, no. 10 (July 15, 2011): 1285–95. http://dx.doi.org/10.1017/s003118201100093x.

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SUMMARYEctoparasitic copepods have been reported in a wide range of aquatic animals, including crustacean shellfish. However, with the exception of the salmon louse, Lepeophtheirus salmonis, our knowledge of such parasites in commercial species is rudimentary. The current study examines the morphology and pathology of the parasitic copepod, Nicothoë astaci (the ‘lobster louse’) in its host, the European lobster, Homarus gammarus. Lobsters were sampled from waters surrounding Lundy Island (Bristol Channel, UK) and all individuals collected were found to harbour female adult N. astaci in their gills, with a mean of 47·3 parasites/lobster. The majority of N. astaci were found in the basal region of pleurobranch gills. The parasite was found to attach to gill filaments via its oral sucker, maxillae and maxillipeds, and to feed on host haemolymph (blood) through a funnel-like feeding channel. It caused varying degrees of damage to the host gill, including occlusion of gill filaments and disruption to the vascular system in the central axis. Although there was evidence of extensive host response (haemocytic infiltration) to the parasite, it was displaced from the parasite attachment site and thus was observed in the central gill axis below. The region of gill filament immediately underlying the parasite feeding channel was devoid of such activity suggesting that the parasite interferes with the cellular defence and haemostatic mechanisms of the lobster in order to maintain invasion of the host.

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Grabda-Kazubska, B., V. Kiseliene, and Ch Bayssade-Dufour. "Morphology and chaetotaxy ofEchinochasmussp. cercaria (Trematoda, Echinochasmidae)." Annales de Parasitologie Humaine et Comparée 66, no. 6 (1991): 263–68. http://dx.doi.org/10.1051/parasite/1991666263.

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Poulin, Robert, and William J. Hamilton. "The Hamilton and Zuk Hypothesis Revisited: a Meta-Analytical Approach." Behaviour 134, no. 3-4 (1997): 299–320. http://dx.doi.org/10.1163/156853997x00485.

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AbstractThe Hamilton & Zuk (1982) hypothesis of parasite-mediated sexual selection has been the subject of both inter- and intraspecific tests. Past reviews have used vote counting to determine whether this hypothesis is supported by empirical evidence. This study reanalysed 199 separate quantitative assessments of a central prediction of the Hamilton & Zuk hypothesis using meta-analytical techniques. Overall, our meta-analysis showed that there was a significant negative effect of parasites on male showiness as predicted. However the magnitude of this effect varied between host taxa and between endo and ectoparasitic taxa. As a whole intraspecific correlations between parasite load and male showiness provided very little support for the hypothesis with only the effect of parasites on fish morphology matching the Hamilton & Zuk prediction. There was more support for the hypothesis from interspecific studies especially those based upon the original Hamilton & Zuk (1982) data set, although other bird studies provided weaker support. The generality of the Hamilton & Zuk hypothesis in respect to parasite mediated sexual selection across taxa is thrown into doubt by these results. However, in some specific host-parasite systems the role of parasites appears important and future intraspecific tests of parasite-mediated sexual selection should perhaps focus on such systems.

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Dissertations / Theses on the topic "Parasite morphology"

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Richards, Gareth Ronald. "Taxonomy, morphology and host-parasite interactions of Gyrodactylus of poeciliid fish." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262582.

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LaPointe, Elizabeth Anne. "An Ultra Structural Study of Sporogenesis, Vegatative Morphology, and Host-Parasite Interactions in Choreonema thuretii (Corallinales, Rhodophyta)." W&M ScholarWorks, 1995. https://scholarworks.wm.edu/etd/1539626968.

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Yu, Xiong. "A study of the development, life cycle, morphology, and drug sensitivity of Leidynema portentosae Van Waerebeke (Nematoda: Oxyuroidea), a parasite of Gromphadorhina portentosa Schaum /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374499497.

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BONETTI, FRANCO C. "Estudo do uso da radiação ionizante como ferramenta de seleção de formas promastigotas metacíclicas de Leishmania amazonensis, e a indução de resposta imunológica em modelos experimentais." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11548.

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Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Marboutie, Georges. "Contribution à l'étude de l'oïdium du pêcher dans la moyenne vallée du Rhône : morphologie, cytologie et biologie de Sphaerotheca pannosa (Wallr.) Lév., var. persicae Wor. Méthodologie de lutte contre la maladie." Lyon 1, 1985. http://www.theses.fr/1985LYO19063.

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BONETTI, FRANCO C. "Acao da radiacao ionizante sobre a morfologia, fisiologia e crescimento da Leishmania amazonensis, com avaliacao de seu poder imunogenico em modelos experimentais." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11025.

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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Bonetti, Franco Claudio. "Estudo do uso da radiação ionizante como ferramenta de seleção de formas promastigotas metacíclicas de Leishmania amazonensis e a indução de resposta imunológica em modelos experimentais." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-16042012-105125/.

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Atualmente, milhões de pessoas, por todo o globo, estão sob risco de serem infectados por um protozoário transmitido vetorialmente por pequenos insetos flebotomíneos. Este parasita é a Leishmania spp., causadora de uma patologia de amplo espectro, que varia desde a moléstia cutânea (tegumentar) até a visceral (kala-azar). A leishmaniose cutânea é a manifestação clínica de maior ocorrência (mais de 90% dos casos). A radiação ionizante, gerada em fonte de 60Co, tem sido utilizada com sucesso para promover alterações físico-químicas em diferentes protozoários, incluindo a Leishmania spp. Em trabalhos anteriores determinou-se que formas promastigotas de Leishmania amazonensis, irradiadas com diferentes doses de radiação gama, perdem sua viabilidade mantendo, porém, sua imunogenicidade. No presente trabalho, estudouse a utilização da radiação ionizante como ferramenta na seleção de formas metacíclicas do parasita em cultura axênica para a possível produção de imunógenos irradiados mais eficientes. Os resultados demonstram que culturas irradiadas com 400 Gy de radiação gama, possuem uma concentração de aproximadamente 75% de parasitas metacíclicos, capazes de produzir, in vitro, uma infecção que mimetiza a ocorrida naturalmente. Estes parasitas irradiados têm sua estrutura celular interna modificada mantendo, entretanto, seu arcabouço externo intacto. Camundongos de uma linhagem suscetível imunizados com leishmanias irradiadas com diferentes doses tiveram sua produção de imunoglobulinas aumentada, e mantiveram os títulos elevados após o desafio com parasitas não irradiados. Em outras linhagens pesquisadas este padrão se manteve, porém em títulos menores, sendo que camundongos imunodeficientes não responderam à imunização nem ao desafio.
Actually, millions of people around the globe are under the risk of infection by a protozoan transmitted by a bit of a sand fly. This parasite is a Leishmania spp. This causes a wide spectrum disease, since a coetaneous disease to a visceral one. The coetaneous form is the major clinical manifestation (above 90%). The ionizing radiation, produced in a 60Co font, had being successes used to promote physical-chemical transformations on different protozoans, including Leishmania spp. In previous work was determined that promastigotes forms of Leishmania amazonensis, irradiated with different doses of radiation, lost their viability maintaining, however, their immunogenicity. In this work, was studied the use of ionizing radiation as a tool for selection of metaciclic forms of the parasite in axenic culture, for a possible efficient irradiated immunogen production. Our results shown that cultures irradiated with 400 Gy of gamma irradiation, has 75% of metaciclic form, which are capable to produce, in vitro, an infection that is similar the natural occurrence. These irradiated parasites have their internal cellular structure modified, maintaining their external structure intact. Susceptible strain of mice immunized with leishmania irradiated with different doses had high immunoglobulin production, and maintained this production after the challenge with naive parasites. In other strains this default was similar, however in lower titles. Immunodeficient mice didnt produce immunoglobulin nor on the immunization or on the challenge.

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Smith, Vincent S. "Avian louse phylogeny (Phthiraptera: Ischnocera) : a cladistic study based on morphology." Thesis, University of Glasgow, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323268.

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Jakes, Kathryn Anne. "Morphology and molecular phylogeny of selected haemoprotozoan parasites of Australian wildlife /." St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17828.pdf.

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Pegler, Katherine Ruth. "Morphology and behaviour of parasitic Psoroptes mites (Acari: Psoroptidae)." Thesis, University of Bristol, 2005. http://hdl.handle.net/1983/c506466b-d9aa-4a51-ae17-e39e0f5e5f89.

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Books on the topic "Parasite morphology"

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Beėr, S. A. Bioraznoobrazie i ėkologii︠a︡ parazitov. Moskva: Nauka, 2010.

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Gardiner, C. H. An atlas of metazoan parasites in animal tissues. Washington, D.C: Armed Forces Institute of Pathology, American Registry of Pathology, 1999.

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Mayer, Ghislaine. Plasmodium Falciparum: Morphology, Life Cycle and Health Impact. Nova Science Publishers, Incorporated, 2013.

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Flisser, Ana, Philip S. Craig, and Akira Ito. Cysticercosis and taeniosis: Taenia solium, Taenia saginata and Taenia asiatica. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780198570028.003.0058.

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The pork and beef tapeworms, Taenia solium and Taenia saginata respectively, are taeniid cestodes and major food-borne or meat-borne zoonoses. Human tapeworms and swine cysticerci have been known since Egyptian and Greek cultures. Nevertheless their association as part of the life cycle of the same parasite was only demonstrated during the nineteenth century. Kuchenmeister fed convicts with cysticerci excised from pork meat and found adult tapeworms in the intestine after autopsy, while van Beneden fed T. solium eggs to pigs and found numerous cysticerci in muscles after slaughter (Grove, 1990).T. solium is the only causative agent of neurocysticercosis in humans and is, therefore, the more important of these species in public health. This chapter describes classical aspects of the morphology of the parasites as well as clinical aspects of the diseases they cause. Most importantly, detailed explanations of taxonomic aspects, specially related to the newly recognized Taenia asiatica are given. Furthermore, the epidemiology and transmission dynamics of the parasites, as well as intervention measures such as health education, mass drug treatment and vaccination, are described in detail. The chapter concludes with considerations on the surveillance and a discussion on prospects for the control of these cestode zoonoses.

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Puthia, Manoj K., and Kevin S. Tan. Blastocystosis. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780198570028.003.0057.

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Blastocystis , the causative agent of blastocystosis, is an intestinal protozoan commonly identified in stool specimens of patients. It is one of the most common parasites inhabiting the human intestinal tract. Clinical symptoms attributed to Blastocystis include recurrent watery diarrhoea, mucous diarrhoea, vomiting, abdominal cramps and flatulence. Blastocystis infects both children and adults and its geographical distribution appears to be global with prevalence ranging from 30 to 50% in developing countries (Stenzel and Boreham 1996).Blastocystis was first described as a distinct organism in 1911 and the name B. enterocola was proposed for this organism (Alexeieff 1911). It was isolated from human faeces and the name B. hominis was coined (Brumpt 1912). At first, it was described as a harmless intestinal yeast and ignored for many decades. Its association with human disease was suggested by a number of reports and eventually work by Zierdt (1991) increased the awareness of Blastocystis infections in humans.In spite of its description about a century ago, the exact role of Blastocystis as a cause of human disease is uncertain. A number of clinical and epidemiological studies implicate the parasite as a potential pathogen (Al-Tawil et al. 1994; El-Shazly et al. 2005; Garavelli et al. 1991; Logar et al. 1994) while others exonerate it as an etiology of intestinal disease (Chen et al. 2003; Leder et al. 2005; Shlim et al. 1995). Significant progress has been achieved on descriptions of the morphology and genetic diversity of Blastocystis but most aspects of its life cycle, molecular biology, and athogenicity remain unresolved (Stenzel and Boreham 1996; Tan 2004).

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Sem Guide to the Morphology of Nematode Parasites of Vertebrates. Oxford Univ Pr, 1986.

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Poynton, S. L., and C. H. Gardiner. An Atlas of Metazoan Parasites in Animal Tissues. American Registry of Pathology, 1992.

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A, Dobrovolʹskiĭ A., Galaktionov K. V, Strelkov A. A, and Murmanskiĭ morskoĭ biologicheskiĭ institut, eds. Morfologii͡a︡ i ėkologii͡a︡ parazitov morskikh zhivotnykh. Apatity: Akademii͡a︡ nauk SSSR, Kolʹskiĭ nauch. t͡s︡entr im. S.M. Kirova, Murmanskiĭ morskoĭ biologicheskiĭ in-t, 1990.

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Rohde, Klaus, ed. Marine Parasitology. CSIRO Publishing, 2005. http://dx.doi.org/10.1071/9780643093072.

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This comprehensive, authoritative and up-to-date work provides the definitive overview of marine parasites worldwide. It is an invaluable reference for students and researchers in parasitology and marine biology and will also be of interest to ecologists, aquaculturists and invertebrate biologists. Initial chapters review the diversity and basic biology of the different groups of marine parasites, discussing their morphology, life cycles, infection mechanisms and effects on hosts. The ecology and importance of marine parasites are discussed in the second part of the book, where contributions investigate behavioural and ecological aspects of parasitism and discuss the evolution and zoogeography of marine parasites. In addition, the economic, environmental and medical significance of these organisms is outlined, particularly their importance in aquaculture and their effects on marine mammals and birds. Written by an international team of contributors, the emphasis is on a thorough grounding in marine parasitology combined with reviews of novel concepts and cutting-edge research.

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Morado, Joseph Frank. The morphology, morphogenesis, culture and pathogenesis of a marine facultative parasitic ciliate, Mesanophrys sp., of the Dungeness crab, Cancer magister, and its occurrence in wild crustacean populations. 1993.

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Book chapters on the topic "Parasite morphology"

1

Lorian, V., W. Tosch, and D. Joyce. "Weight and Morphology of Bacteria Exposed to Antibiotics." In The Influence of Antibiotics on the Host-Parasite Relationship II, 65–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70748-3_7.

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Klimpel, Sven, Thomas Kuhn, Julian Münster, Dorian D. Dörge, Regina Klapper, and Judith Kochmann. "Anatomy and Morphology of Fish and Cephalopods." In Parasites of Marine Fish and Cephalopods, 15–27. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16220-7_2.

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Walldorf, Volker, and Heinz Mehlhorn. "Bats: A Glimpse on Their Astonishing Morphology and Lifestyle." In Bats (Chiroptera) as Vectors of Diseases and Parasites, 7–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39333-4_2.

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Erlewine, Michael Yoshitaka. "Universal Free Choice from Concessive Copular Conditionals in Tibetan." In Lecture Notes in Computer Science, 13–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-62843-0_2.

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AbstractI describe the expression of free choice in Tibetan, which involves the combination of a wh-word, copula, conditional morphology, and a scalar ‘even’ particle. I demonstrate that the conventional semantics of these ingredients successfully combine to derive universal free choice meaning. This motivates a new approach to the compositional semantics of universal free choice, which does not prescribe its universal force. This quantificational force is parasitic on the modal/temporal operator which is restricted by the conditional; the scalar ‘even’ particle then ensures that the conditional restricts a necessity modal.

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Asarnow, Daniel, and Rahul Singh. "Segmentation of Parasites for High-Content Screening Using Phase Congruency and Grayscale Morphology." In Advances in Visual Computing, 51–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33179-4_6.

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Arnaldo Sato, Hector, and Ana Maria Gonzalez. "Anatomy, Embryology and Life Cycle of Lophophytum, a Root-Holoparasitic Plant." In Parasitic Plants [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99981.

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The most extreme manifestation of parasitism occurs in holoparasites, plants that are totally achlorophyllous. Among them, the genus Lophophytum (Balanophoraceae) is characterized by an aberrant vegetative body called a tuber, devoid of stems and leaves. The genus is exclusively South American, comprising five taxa, which parasitize the roots of trees or shrubs. This review focuses on the Argentine species of the genus: L. leandri and L. mirabile subsp. bolivianum. Topics covered include: morphology and anatomy of the vegetative body and host–parasite connection; structure, anatomy and development of the staminate and pistillate flowers; sporogenesis and gametogenesis, embryo sac inversion; endospermogenesis, embryogenesis and fruit development. The evolutionary trend in the gynoecium and embryo sac of the Balanophoraceae is also discussed to reflect the variability. Finally, observations were made on the synchronization of the life cycles of the parasites and hosts to infer possible ways by which parasitism has evolved, until now unknown.

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Soares da Silva, Newton, Aline Margraf Ferreira, Carolina Weigert Galvão, Rafael Mazer Etto, and Cristina Pacheco Soares. "Cell Death after Photodynamic Therapy Treatment in Unicellular Protozoan Parasite Tritrichomonas foetus." In Photodynamic Therapy - from Basic Science to Clinical Research [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94140.

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Programmed cell death in T. foetus does not seem to make sense at first sight; however, different mechanisms of cellular death in this unicellular organism have been observed. This review summarizes the available data related to programmed cell death already published for the cattle parasite T. foetus and attempts to clarify some crucial points to understand this mechanism found in non-mitochondriates parasites, as well as assist in future research. Important results with different treatments showed that the T. foetus can choose among different pathways how to initiate cell death. Thus, a major challenge for cellular death research remains the identification of the molecular cell death machinery of this protist, such as caspases pathway, nuclear abnormalities, morphology cell changes, cellular death in this parasite and the prospects in the future research. Although, the possibility of the existence of different pathways to cell death in trichomonads is discussed and a model for possible executioners pathways during T. foetus cell death is proposed.

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SLAIS, J. "THE MORPHOLOGY OF THE PARASITE IN CYSTICERCOSE OF THE BRAIN." In Proceedings of the First International Congress of Parasitology, 803–4. Elsevier, 1999. http://dx.doi.org/10.1016/b978-0-08-011427-9.50159-1.

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Bhumbla, Upasana. "Morphology of Various Parasites." In Workbook for Practical Microbiology, 144. Jaypee Brothers Medical Publishers (P) Ltd., 2018. http://dx.doi.org/10.5005/jp/books/14206_18.

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"Haematology." In Oxford Handbook of Clinical and Laboratory Investigation, edited by Drew Provan, 211–308. Oxford University Press, 2010. http://dx.doi.org/10.1093/med/9780199233717.003.0003.

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Full blood count 212 Red cell parameters 214 White cells 216 Platelet count 217 Peripheral blood film 218 Red cell morphology 219 Parasites on the blood film & marrow 222 White blood cell morphology 224 Assessment of iron status 226 Assessment of vitamin B_12...

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Conference papers on the topic "Parasite morphology"

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Tan, X. Gary, Maria M. D’Souza, Subhash Khushu, Raj K. Gupta, Virginia G. DeGiorgi, Ajay K. Singh, and Amit Bagchi. "Computational Modeling of Blunt Impact to Head and Correlation of Biomechanical Measures With Medical Images." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88026.

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Mild traumatic brain injury (TBI) is a very common injury to service members in recent conflicts. Computational models can offer insights in understanding the underlying mechanism of brain injury, which can aid in the development of effective personal protective equipment. This paper attempts to correlate simulation results with clinical data from advanced techniques such as magnetic resonance imaging (MRI), diffusion tensor imaging (DTI), functional MRI (fMRI), MR spectroscopy and susceptibility weighted imaging (SWI), to identify TBI related subtle alterations in brain morphology, function and metabolism. High-resolution image data were obtained from the MRI scan of a young adult male, from a concussive head injury caused by a road traffic accident. The falling accident of human was modeled by combing high-resolution human head model with an articulated human body model. This mixed, multi-fidelity computational modeling approach can efficiently investigate such accident-related TBI. A high-fidelity computational head model was used to accurately reproduce the complex structures of the head. For most soft materials, the hyper-viscoelastic model was used to captures the strain rate dependence and finite strain nonlinearity. Stiffer materials, such as bony structure were simulated using an elasto-plastic material model to capture the permanent deformation. We used the enhanced linear tetrahedral elements to remove the parasitic locking problem in modeling such incompressible biological tissues. The bio-fidelity of human head model was validated from human cadaver tests. The accidental fall was reconstructed using such multi-fidelity models. The localized large deformation in the head was simulated and compared with the MRI images. The shear stress and shear strain were used to correlate with the post-accident medical images with respect to the injury location and severity in the brain. The correspondence between model results and MRI findings further validates the human head models and enhances our understanding of the mechanism, extent and impact of TBI.

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