Academic literature on the topic 'Vertebrates Morphology'

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Journal articles on the topic "Vertebrates Morphology"

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Root, Zachary D., Claire Gould, Margaux Brewer, David Jandzik, and Daniel M. Medeiros. "Comparative Approaches in Vertebrate Cartilage Histogenesis and Regulation: Insights from Lampreys and Hagfishes." Diversity 13, no. 9 (September 10, 2021): 435. http://dx.doi.org/10.3390/d13090435.

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Jawed vertebrates (gnathostomes) have been the dominant lineage of deuterostomes for nearly three hundred fifty million years. Only a few lineages of jawless vertebrates remain in comparison. Composed of lampreys and hagfishes (cyclostomes), these jawless survivors are important systems for understanding the evolution of vertebrates. One focus of cyclostome research has been head skeleton development, as its evolution has been a driver of vertebrate morphological diversification. Recent work has identified hyaline-like cartilage in the oral cirri of the invertebrate chordate amphioxus, making
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Burke, A. C., C. E. Nelson, B. A. Morgan, and C. Tabin. "Hox genes and the evolution of vertebrate axial morphology." Development 121, no. 2 (February 1, 1995): 333–46. http://dx.doi.org/10.1242/dev.121.2.333.

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A common form of evolutionary variation between vertebrate taxa is the different numbers of segments that contribute to various regions of the anterior-posterior axis; cervical vertebrae, thoracic vertebrae, etc. The term ‘transposition’ is used to describe this phenomenon. Genetic experiments with homeotic genes in mice have demonstrated that Hox genes are in part responsible for the specification of segmental identity along the anterior-posterior axis, and it has been proposed that an axial Hox code determines the morphology of individual vertebrae (Kessel, M. and Gruss, P. (1990) Science 24
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Eilam, David. "Comparative Morphology of Locomotion in Vertebrates." Journal of Motor Behavior 27, no. 1 (March 1995): 100–111. http://dx.doi.org/10.1080/00222895.1995.9941703.

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Rossi, Valentina, Maria E. McNamara, Sam M. Webb, Shosuke Ito, and Kazumasa Wakamatsu. "Tissue-specific geometry and chemistry of modern and fossilized melanosomes reveal internal anatomy of extinct vertebrates." Proceedings of the National Academy of Sciences 116, no. 36 (August 19, 2019): 17880–89. http://dx.doi.org/10.1073/pnas.1820285116.

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Recent discoveries of nonintegumentary melanosomes in extant and fossil amphibians offer potential insights into the physiological functions of melanin not directly related to color production, but the phylogenetic distribution and evolutionary history of these internal melanosomes has not been characterized systematically. Here, we present a holistic method to discriminate among melanized tissues by analyzing the anatomical distribution, morphology, and chemistry of melanosomes in various tissues in a phylogenetically broad sample of extant and fossil vertebrates. Our results show that intern
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Witter, Menno P., Heidi Kleven, and Asgeir Kobro Flatmoen. "Comparative Contemplations on the Hippocampus." Brain, Behavior and Evolution 90, no. 1 (2017): 15–24. http://dx.doi.org/10.1159/000475703.

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The hippocampus in mammals is a morphologically well-defined structure, and so are its main subdivisions. To define the homologous structure in other vertebrate clades, using these morphological criteria has been difficult, if not impossible, since the typical mammalian morphology is absent. Although there seems to be consensus that the most medial part of the pallium represents the hippocampus in all vertebrates, there is no consensus on whether all mammalian hippocampal subdivisions are present in the derivatives of the medial pallium in all vertebrate groups. The aim of this paper is to exp
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Henderson, V., and M. J. Song. "Morphology of mitochondria in a teleost, salmo gairdneri." Proceedings, annual meeting, Electron Microscopy Society of America 44 (August 1986): 194–95. http://dx.doi.org/10.1017/s0424820100142591.

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Mitochondria have been observed at the ultrastructural level as spherical, oval, or sausagelike. Mitochondria average 0.3 to 1.0 um in diameter and 1.0 to 10.0 μm in length. Mitochondria may exceed these dimensions under certian physiological or pathological conditions. The number of mitochondria may reflect the metabolic condition of cells. Cells with high ATP demands display a large number of mitochondria. High energy requirements characterize muscles in both vertebrates and invertebrates. It has been established that yeast cells have but a single mitochondrion. This investigation was design
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Srikulnath, Kornsorn, Syed Farhan Ahmad, Worapong Singchat, and Thitipong Panthum. "Why Do Some Vertebrates Have Microchromosomes?" Cells 10, no. 9 (August 24, 2021): 2182. http://dx.doi.org/10.3390/cells10092182.

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With more than 70,000 living species, vertebrates have a huge impact on the field of biology and research, including karyotype evolution. One prominent aspect of many vertebrate karyotypes is the enigmatic occurrence of tiny and often cytogenetically indistinguishable microchromosomes, which possess distinctive features compared to macrochromosomes. Why certain vertebrate species carry these microchromosomes in some lineages while others do not, and how they evolve remain open questions. New studies have shown that microchromosomes exhibit certain unique characteristics of genome structure and
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Schwenk, Kurt, and Günter P. Wagner. "Visualizing vertebrates: new methods in functional morphology." Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 313A, no. 5 (April 20, 2010): 241–43. http://dx.doi.org/10.1002/jez.608.

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Miyashita, Tetsuto, Michael I. Coates, Robert Farrar, Peter Larson, Phillip L. Manning, Roy A. Wogelius, Nicholas P. Edwards, et al. "Hagfish from the Cretaceous Tethys Sea and a reconciliation of the morphological–molecular conflict in early vertebrate phylogeny." Proceedings of the National Academy of Sciences 116, no. 6 (January 22, 2019): 2146–51. http://dx.doi.org/10.1073/pnas.1814794116.

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Hagfish depart so much from other fishes anatomically that they were sometimes considered not fully vertebrate. They may represent: (i) an anatomically primitive outgroup of vertebrates (the morphology-based craniate hypothesis); or (ii) an anatomically degenerate vertebrate lineage sister to lampreys (the molecular-based cyclostome hypothesis). This systematic conundrum has become a prominent case of conflict between morphology- and molecular-based phylogenies. To date, the fossil record has offered few insights to this long-branch problem or the evolutionary history of hagfish in general, be
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Sakashita, Misaki, Shintaro Yamasaki, Kentaro Yaji, Atsushi Kawamoto, and Shigeru Kondo. "Three-dimensional topology optimization model to simulate the external shapes of bone." PLOS Computational Biology 17, no. 6 (June 16, 2021): e1009043. http://dx.doi.org/10.1371/journal.pcbi.1009043.

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Elucidation of the mechanism by which the shape of bones is formed is essential for understanding vertebrate development. Bones support the body of vertebrates by withstanding external loads, such as those imposed by gravity and muscle tension. Many studies have reported that bone formation varies in response to external loads. An increased external load induces bone synthesis, whereas a decreased external load induces bone resorption. This relationship led to the hypothesis that bone shape adapts to external load. In fact, by simulating this relationship through topology optimization, the int
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Dissertations / Theses on the topic "Vertebrates Morphology"

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Brazeau, Martin D. "Endocranial Morphology and Phylogeny of Palaeozoic Gnathostomes (Jawed Vertebrates)." Doctoral thesis, Uppsala universitet, Evolutionär organismbiologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9360.

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Gnathostomes, or jawed vertebrates, make up the overwhelming majority of modern vertebrate diversity. Among living vertebrates, they comprise the chondrichthyans (“cartilaginous fishes” such as sharks, skates, rays, chimaeras) and the osteichthyans (“bony fishes” or bony vertebrates, inclusive of tetrapods). Gnathostomes appear to have originated in the early Palaeozoic Era, but their early fossil record is fairly scant. The best fossils appear first in the Late Silurian and Devonian periods. Much of gnathostome diversity owes to unique adaptations in the internal skeleton of their head (the e
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Lewis, Philip Nigel. "The morphology and function of the peritoneum in lower vertebrates with special reference to teleosts." Thesis, University of Stirling, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391492.

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Jones, Christopher David Stanford. "On the cross-sectional form of the patella in several primates." Title page, table of contents and abstract only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phj764.pdf.

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Boonzaier, Julia. "Morphology and mucin histochemistry of the gastrointestinal tracts of three insectivorous mammals : Acomys spinosissimus, Crocidura cyanea and Amblysomus hottentotus." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20220.

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Thesis (MsCMedSc)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The gastrointestinal morphology and the distribution of the different types of mucin secreting goblet cells were investigated in three mammalian insectivorous species, namely A. spinosissimus, C. cyanea and A. hottentotus. The aim of the study was to provide a comprehensive morphological comparison between the different species. Another aim was to illustrate and compare the distribution of mucins (neutral, sulfo- and sialomucins) in the gastrointestinal tracts (GITs) of these species, in order to better understand the quali
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Sylvester, Jonathan Blaylock. "Brain diversity develops early: a study on the role of patterning on vertebrate brain evolution." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42744.

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The brain has been one of the central foci in studies of vertebrate evolution. Work in East African cichlids and other emerging fish models like the Mexican cavefish (Astyanax mexicanus) offer new insight on the role of patterning on brain evolution. These fish can be grouped into two major categories according to habitat; for cichlids it is rock-dwelling (known locally as mbuna) and sand-dwelling (non-mbuna) lineage. The brain development of mbuna versus non-mbuna is defined by changes in gene deployment working along the dorsal/ventral (DV) and anterior/posterior (AP) neuraxes, respectively.
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Jessee, Lance D., Austin Gause, and Blaine W. Schubert. "Intervertebral Variation of North American Pit Vipers (Squamata, Viperidae) Using Geometric Morphometrics." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/95.

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Within Pleistocene cave deposits, snake fossils tend to be relatively common and generally occur as isolated vertebrae. However, the specific, and sometimes generic, identification of isolated snake vertebrae is often hindered by the significant amount of intra- and interspecific variation along the precloacal vertebral column, a subject that has largely been neglected in many fossil snake identifications. Identifications are typically based on the vertebrae of disarticulated modern specimens with preference given to mid-trunk vertebrae. This study utilizes 2-D geometric morphometrics to deter
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Gause, Austin R. J., Lance D. Jessee, and Blaine W. Schubert. "Geometric Morphometric Analysis of Intervertebral Variation in Colubrid Snakes." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/199.

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Snake vertebrae are common throughout the Cenozoic fossil record, but identification of isolated vertebrae often proves difficult due to inter- and intra-columnar variability. Most fossil identifications are based on comparisons with disarticulated modern specimens, with a focus on mid-trunk vertebrae. One focus of this study was to determine the necessity of identifying a true mid-trunk vertebra prior to identification and to develop a method of locating the columnar position of an isolated vertebra for both modern and fossil identifications. Colubrid genera Farancia and Heterodon were chosen
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Cotter, Meghan Marie. "Gross Morphology, Microarchitecture, Strength and Evolution of the Hominoid Vertebral Body." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1295890557.

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Kraig, Sarah Elizabeth. "Morphology and systematic implications of fossil and recent Lamnid shark vertebrae using computerized tomography (CT-scanning)." Diss., Connect to online resource - MSU authorized users, 2008.

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Ramzu, Mohamed Yassin A. "Etude de la regionalisation de la colonne vertebrale en fonction des modes de nage chez les teleosteens. Morphologie, histologie, croissance." Paris 7, 1994. http://www.theses.fr/1994PA077291.

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Chez les teleosteens on definit quatre grands modes de nage axiale (anguilliforme, subcarangiforme, carangiforme, thunniforme). Chacun de ces quatre modes de nage se caracterise par une morphologie differente des poissons et des specificites hydrodynamiques reposant sur la proportion du corps soumise aux ondulations motrices. L'etude biometrique (quatre mesures pour chaque vertebre) et histomorphometrique (compacite osseuse vertebrale) du rachis chez l'anguille, la truite, le chinchard et la bonite revelent une organisation particuliere et des caracteristiques structurales liees aux differents
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Books on the topic "Vertebrates Morphology"

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International Symposium on Vertebrate Morphology (2nd 1986 Vienna, Austria). Tren ds in vertebrate morphology: Proceedings of the 2nd International Symposium on Vertebrate Morphology, Vienna, 1986. Stuttgart: G. Fischer Verlag, 1989.

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Vertebrate flight: Mechanics, physiology, morphology, ecology and evolution. Berlin: Springer-Verlag, 1990.

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Hildebrand, Milton. Analysis of vertebrate structure. 3rd ed. New York: Wiley, 1988.

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E, Goslow G., ed. Analysis of vertebrate structure. 5th ed. New York: John Wiley, 2001.

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Hildebrand, Milton. Analysis of vertebrate structure. 4th ed. New York: J. Wiley, 1995.

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What your fossils can tell you: Vertebrate morphology, pathology and cultural modification. Gainesville: University Press of Florida, 2010.

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Mossman, Harland W. Vertebrate fetal membranes: Comparative ontogeny and morphology ; evolution ; phytogenetic significance. New Brunswick, N. J: Rutgers University Press, 1987.

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Vertebral morphology, alternation of neural spine height, and structure in Permo-Carboniferous tetrapods, and a reappraisal of primitive modes of terrestrial locomotion. Berkeley: University of California Press, 1990.

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Vertebrate fetal membranes: Comparative ontogeny and morphology; evolution; phylogenetic significance; basic functions; research opportunities. Basingstoke: Macmillan, 1987.

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Mikhailov, K. E. Fossil and recent eggshell in amniotic vertebrates: Fine structure, comparative morphology and classification. London: The Palaeontological Association, 1997.

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Book chapters on the topic "Vertebrates Morphology"

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Gidmark, Nicholas J., Kelsie Pos, Bonne Matheson, Esai Ponce, and Mark W. Westneat. "Functional Morphology and Biomechanics of Feeding in Fishes." In Feeding in Vertebrates, 297–332. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13739-7_9.

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Brainerd, Elizabeth L., and Ariel L. Camp. "Functional Morphology of Vertebrate Feeding Systems: New Insights from XROMM and Fluoromicrometry." In Feeding in Vertebrates, 21–44. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13739-7_2.

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Vinyard, Christopher J., Mark F. Teaford, Christine E. Wall, and Andrea B. Taylor. "The Masticatory Apparatus of Humans (Homo sapiens): Evolution and Comparative Functional Morphology." In Feeding in Vertebrates, 831–65. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13739-7_21.

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Weishampel, David B. "A Theoretical Morphological Approach to Tooth Replacement in Lower Vertebrates." In Constructional Morphology and Evolution, 295–310. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76156-0_20.

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Dodt, E. "Light Sensitivity of the Pineal Organ in Poikilothermic and Homeothermic Vertebrates." In Functional Morphology of Neuroendocrine Systems, 123–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-72886-0_9.

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Rahmann, Hinrich, and Mathilde Rahmann. "Functional Morphology of the Nervous System in Vertebrates." In The Neurobiological Basis of Memory and Behavior, 45–91. New York, NY: Springer New York, 1992. http://dx.doi.org/10.1007/978-1-4612-2772-4_3.

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y Cajal, Santiago Ramón. "Morphology of the Nerve Cell (Continuation)." In Texture of the Nervous System of Man and the Vertebrates, 53–83. Vienna: Springer Vienna, 1999. http://dx.doi.org/10.1007/978-3-7091-6435-8_4.

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Reinecke, M., D. Betzler, H. Segner, and W. G. Forssmann. "Dual distribution of cardiac hormones (CDD/ANP) in the heart and brain of vertebrates." In Functional Morphology of the Endocrine Heart, 87–93. Heidelberg: Steinkopff, 1989. http://dx.doi.org/10.1007/978-3-642-72432-9_9.

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Meisner, Donna Holmes. "Histology and Gross Morphology of the Sexually Dimorphic Sternal Gland in the North American Opossum, Didelphis Virginiana Kerr." In Chemical Signals in Vertebrates 4, 579–85. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2235-1_46.

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y Cajal, Santiago Ramón. "Physiologic Inferences from the Morphology and Connectivity of Neurons." In Texture of the Nervous System of Man and the Vertebrates, 85–122. Vienna: Springer Vienna, 1999. http://dx.doi.org/10.1007/978-3-7091-6435-8_5.

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Conference papers on the topic "Vertebrates Morphology"

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Chiesa, Elena, Paola Irato, and Gianfranco Santovito. "THE CIRCULATORY SYSTEM OF VERTEBRATES AND INVERTEBRATES: AN EMPIRICAL RESEARCH TO INTRODUCE IN THE FOURTH CLASS THE TREATMENT OF ANIMAL MORPHOLOGY IN A COMPARATIVE KEY." In 13th International Technology, Education and Development Conference. IATED, 2019. http://dx.doi.org/10.21125/inted.2019.0391.

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Lim, Poay Hoon, Ulas Bagci, Omer Aras, and Li Bai. "Identification of spinal vertebrae using mathematical morphology and level set method." In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (2011 NSS/MIC). IEEE, 2011. http://dx.doi.org/10.1109/nssmic.2011.6152563.

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Kode, Swathi, Nicole A. Kallemeyn, Joseph D. Smucker, Douglas C. Fredericks, and Nicole M. Grosland. "Adaptive Bone Remodeling Theory Applied to Cervical Laminoplasty." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53262.

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Laminoplasty, considered an alternative to laminectomy, is intended to relieve pressure on the spinal cord while maintaining the stabilizing effects of the posterior elements of the vertebrae. Open-door laminoplasty (ODL) includes opening of the lamina from either the left or right side with the contralateral side acting as hinge. The main aim of laminoplasty is to recreate a stable laminar arch that preserves laminar opening. As hinge failure is a commonly encountered problem during laminoplasty, it is necessary to understand the process of bone remodeling post laminoplasty. This study aims a
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Thrane, Lars, Thomas M. Jørgensen, and Jörg Männer. "Optical tissue clearing improves usability of optical coherence tomography (OCT) for high-throughput analysis of the internal structure and 3D morphology of small biological objects such as vertebrate embryos." In SPIE BiOS, edited by Andrew M. Rollins, Cecilia W. Lo, and Scott E. Fraser. SPIE, 2014. http://dx.doi.org/10.1117/12.2037303.

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