Relevant bibliographies by topics / Phenotypic clumping

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Phenotypic clumping'

Author: Grafiati
Published: 6 September 2023
Last updated: 31 July 2025

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Journal articles on the topic "Phenotypic clumping"

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Moreno, Eduardo, Angela McGaughran, Christian Rödelsperger, Manuel Zimmer, and Ralf J. Sommer. "Oxygen-induced social behaviours in Pristionchus pacificus have a distinct evolutionary history and genetic regulation from Caenorhabditis elegans." Proceedings of the Royal Society B: Biological Sciences 283, no. 1825 (2016): 20152263. http://dx.doi.org/10.1098/rspb.2015.2263.

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Wild isolates of the nematode Caenorhabditis elegans perform social behaviours, namely clumping and bordering, to avoid hyperoxia under laboratory conditions. In contrast, the laboratory reference strain N2 has acquired a solitary behaviour in the laboratory, related to a gain-of-function variant in the neuropeptide Y-like receptor NPR-1. Here, we study the evolution and natural variation of clumping and bordering behaviours in Pristionchus pacificus nematodes in a natural context, using strains collected from 22 to 2400 metres above sea level on La Réunion Island. Through the analysis of 106
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Franco, Antonietta, Caroline E. Walton, and Xiawei Dang. "Mitochondria Clumping vs. Mitochondria Fusion in CMT2A Diseases." Life 12, no. 12 (2022): 2110. http://dx.doi.org/10.3390/life12122110.

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Phenotypic variations in Charcot-Marie-Tooth disease type 2A (CMT2A) result from the many mutations in the mitochondrial fusion protein, mitofusin 2 (MFN2). While the GTPase domain mutations of MFN2 lack the ability to hydrolyze GTP and complete mitochondrial fusion, the mechanism of dysfunction in HR1 domain mutations has yet to be explored. Using Mfn1/Mfn2 double null cells and Mfn2 knock out (KO) fibroblasts, we measured the ability of this variant protein to change conformations and hydrolyze GTP. We found that a mutation in the HR1 domain (M376A) of MFN2 results in conformational change d
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Ayers, J. R., H. W. Leipold, and G. A. Padgett. "Lesions in Brangus Cattle with Chediak-Higashi Syndrome." Veterinary Pathology 25, no. 6 (1988): 432–36. http://dx.doi.org/10.1177/030098588802500605.

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Hair, peripheral blood leukocytes, and other tissues from two related Brangus calves with phenotypic characteristics of Chediak-Higashi syndrome were examined by light and electron microscopy. Enlarged, pleomorphic, cytoplasmic granules, morphologically compatible with lysosomes, were seen in several neutrophils, many eosinophils, renal tubular epithelial cells, and Kupffer cells. Hair shafts of the calves showed irregular distribution and clumping of melanin granules. Severe infection and a possible hemorrhagic tendency were recognized. These Brangus calves represent the third breed of cattle
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GONANO, M., I. HEIN, P. ZANGERL, A. RAMMELMAYR, and M. WAGNER. "Phenotypic and molecular characterization ofStaphylococcus aureusstrains of veterinary, dairy and human origin." Epidemiology and Infection 137, no. 5 (2008): 688–99. http://dx.doi.org/10.1017/s0950268808001453.

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SUMMARYAustrian veterinary (n=91), dairy (n=86), and human strains (n=48) ofStaphylococcus aureuswere tested for various phenotypic properties including clumping factor, egg-yolk reaction, production of thermonuclease and susceptibility to 14 antibiotics. In addition the expression of enterotoxins (A–E), and the presence of enterotoxin genesseatosejandtstwas determined. Significant differences in antimicrobial susceptibility were found with 84·6% of veterinary, 57·0% of dairy, and 20·8% of human strains susceptible to all antibiotics tested (P<0·0005). More human strains produced enterotoxi
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Bhaduri, Saumya, and James L. Smith. "Virulence Plasmid (pYV)-Associated Expression of Phenotypic Virulent Determinants in PathogenicYersiniaSpecies: A Convenient Method for Monitoring the Presence of pYV under Culture Conditions and Its Application for Isolation/Detection ofYersinia pestisin Food." Journal of Pathogens 2011 (2011): 1–9. http://dx.doi.org/10.4061/2011/727313.

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InYersinia pestis,Y. pseudotuberculosis, andY. enterocolitica, phenotypic expression of virulence plasmid (pYV: 70-kb)-associated genetic determinants may include low-calcium response (Lcr, pinpoint colony, size = 0.36 mm), colony morphology (size = 1.13 mm), crystal violet (CV) binding (dark-violet colony), Congo Red (CR) uptake (red pinpoint colony, size = 0.36 mm), autoagglutination (AA = cells agglutinate), and hydrophobicity (HP = clumping of cells).Y. pseudotuberculosisis chromosomally closely related toY. pestis;whereas,Y. enterocoliticais chromosomally more distantly related toY. pesti
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Ramm, Susanne, Robert Vary, Twishi Gulati, et al. "High-Throughput Live and Fixed Cell Imaging Method to Screen Matrigel-Embedded Organoids." Organoids 2, no. 1 (2022): 1–19. http://dx.doi.org/10.3390/organoids2010001.

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Technical advances in microscopy and automation have enabled image-based phenotypic screening of spheroids and organoids to become increasingly high throughput and high content at the same time. In particular, matrix-embedded 3D structures can recapitulate many aspects of parent (e.g., patient) tissues. Live-cell imaging of growing structures allows tremendous insight into population heterogeneity during drug treatment. However, screening for targeted markers and more detailed morphological analyses typically require fixation of 3D structures, and standard formaldehyde (FA) incubation conditio
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Orjih, C. I., A. Ajayi, F. O. Alao, A. I. Adeleye, and S. I. Smith. "Characterization of biofilm formation in clinical urinary isolates of Staphylococcus aureus from five hospitals in Lagos State, Nigeria." African Journal of Clinical and Experimental Microbiology 22, no. 2 (2021): 164–69. http://dx.doi.org/10.4314/ajcem.v22i2.8.

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Background: Biofilm formation by pathogens is of great clinical importance as it mediates persistence and resistance to antibiotics, hence posing difficulty in treatment and management of diseases. The aim of this study was to evaluate the biofilm forming potential of Staphylococcus aureus isolated from urine samples of females with urinary tract infection and to detect the presence of clumping factor (clfA) and intracellular adhesion (icaA) encoding genes.Methodology: A total of 50 S. aureus were obtained from urine samples of women in five hospitals in Lagos State, Nigeria. Isolates were con
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Ericksen, Bryan. "Quantification of polysaccharides fixed to Gram stained slides using lactophenol cotton blue and digital image processing." F1000Research 4 (May 15, 2017): 1. http://dx.doi.org/10.12688/f1000research.5779.3.

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Dark blue rings and circles emerged when the non-specific polysaccharide stain lactophenol cotton blue was added to Gram stained slides. The dark blue staining is attributable to the presence of capsular polysaccharides and bacterial slime associated with clumps of Gram-negative bacteria. Since all bacterial cells are glycosylated and concentrate polysaccharides from the media, the majority of cells stain light blue. The contrast between dark and light staining is sufficient to enable a digital image processing thresholding technique to be quantitative with little background noise. Prior to th
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Ericksen, Bryan. "Quantification of polysaccharides fixed to Gram stained slides using lactophenol cotton blue and digital image processing." F1000Research 4 (July 13, 2017): 1. http://dx.doi.org/10.12688/f1000research.5779.4.

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Dark blue rings and circles emerged when the non-specific polysaccharide stain lactophenol cotton blue was added to Gram stained slides. The dark blue staining is attributable to the presence of capsular polysaccharides and bacterial slime associated with clumps of Gram-negative bacteria. Since all bacterial cells are glycosylated and concentrate polysaccharides from the media, the majority of cells stain light blue. The contrast between dark and light staining is sufficient to enable a digital image processing thresholding technique to be quantitative with little background noise. Prior to th
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10

Asante, Jonathan, Akebe L. K. Abia, Daniel Anokwah, et al. "Phenotypic and Genomic Insights into Biofilm Formation in Antibiotic-Resistant Clinical Coagulase-Negative Staphylococcus Species from South Africa." Genes 14, no. 1 (2022): 104. http://dx.doi.org/10.3390/genes14010104.

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The work aims to investigate biofilm formation and biofilm/adhesion-encoding genes in coagulase-negative staphylococci (CoNS) species recovered from blood culture isolates. Eighty-nine clinical CoNS were confirmed using the VITEK 2 system, and antibiotic susceptibility testing of isolates was conducted using the Kirby-Bauer disk diffusion method against a panel of 20 antibiotics. Isolates were qualitatively screened using the Congo red agar medium. Quantitative assays were performed on microtiter plates, where the absorbances of the solubilised biofilms were recorded as optical densities and q
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Dissertations / Theses on the topic "Phenotypic clumping"

1

Onyambu, Frank Gekara. "Study of Platelet-mediated clumping adhesion phenotypes in Plasmodium falciparum malaria." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:2bc489a9-121e-41ab-8830-1cb07e5b01f2.

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Platelet-mediated clumping of Plasmodium falciparum-infected erythrocytes (IEs) is a common property of field isolates associated with severe disease (Pain, Ferguson et al. 2001). Platelet receptors CD36 (Pain, Ferguson et al. 2001), P-Selectin (Wassmer, Taylor et al. 2008) and gC1qR (Biswas, Hafiz et al. 2007) mediate clumping. To characterize the molecular specificities of the clumping phenotype, I cloned clumping parasite line IT/C10 by limiting dilution. I characterized var gene expression in the IT/C10 clones using generic primers for the DBL tag region (Bull, Berriman et al. 2005). Clump
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Bangal, Priti Pandurang. "Understanding Rules of Assembly and Species Interactions in Mixed-species Bird Flocks." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/4432.

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In mixed-species bird flocks (flocks hereafter), participants vary in their degree of similarity with each other. Flock participants can gain group size (supplementary) benefits by choosing similar flock partners, or complementary benefits from dissimilar partners. The nature of benefits, therefore varies based on overall similarity in the flock. Earlier research has shown that flocks world over tend to be phenotypically clumped and that intraspecifically gregarious species are important benefit providers. In this thesis, I examine changing patterns of associations and species importance
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