Results 291 to 300 of about 11,739 (323)
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T‐cell receptors in ectothermic vertebrates
Immunological Reviews, 1998Summary: The structure and expression of genes encoding molecules homologous to mammalian T‐cell receptors (TCR) have been recently studied in ectothermic vertebrate species representative of chondrychthians, teleosts, and amphibians. The overall TCR chain structure is well conserved in phylogeny: TCRβ‐ and TCRα‐like chains were detected in all the ...
J, Charlemagne +4 more
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Pseudoneoplasms in ectothermic animals.
National Cancer Institute monograph, 1984Gross and cytologic similarities between certain non-neoplastic conditions and neoplasms in lower animals including fish, amphibians, and reptiles have invited misinterpretations and contested interpretations. Major categories of pseudo-neoplasms, illustrated by specific examples from material accessioned into the Registry of Tumors in Lower Animals ...
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Immunoglobulin light (IgL) chains in ectothermic vertebrates
Developmental & Comparative Immunology, 2011Four major ancesteral IgL isotypes have been identified κ, λ, σ and σ-cart. However, depending on the vertebrate class the genomic representation of these isotypes differs in regards to what is encoded in the germline and how these genes are organized. Also, the relative contribution of each isotype in immune responses varies.
Eva-Stina, Edholm +2 more
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Functional Adaptations in Hemoglobins from Ectothermic Vertebrates
Annual Review of Physiology, 1988Hemoglobin (Hb) increases the O2 carrying capacity of the blood of ectothermic vertebrates by about twenty times compared to physically dis solved O2. This drastically raises the blood O2 capacitance coefficient ({30,= .leo /.lpo) and permits corresponding reductions in the cardiac output (Qh) 2 2 • required for a given convective O2 transfer (V 0) as
Weber, Roy E., Jensen, Frank B.
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Patterns of Thermal Constraint on Ectotherm Activity
The American Naturalist, 2015Thermal activity constraints play a major role in many aspects of ectotherm ecology, including vulnerability to climate change. Therefore, there is strong interest in developing general models of the temperature dependence of activity. Several models have been put forth (explicitly or implicitly) to describe such constraints; nonetheless, tests of the ...
Alex R, Gunderson, Manuel, Leal
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Endotherms, ectotherms, and mitochondrial genome-size variation
Journal of Molecular Evolution, 1993The patterns of mitochondrial genome-size variation were investigated in endothermic and ectothermic species to examine the role that thermal habit might play in the evolution of animal mitochondrial DNA (mtDNA). Data on mtDNA size (the modal, largest, and smallest mtDNA reported within a species), the percent variation in mtDNA size (the difference in
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Behavioural hydroregulation protects against acute effects of drought in a dry-skinned ectotherm
Oecologia, 2022Mathias Dezetter +2 more
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Sibling rivalry in ectothermic vertebrates
1997Abstract In most fishes, reptiles and amphibians, offspring receive no post-zygotic parental investment, shareable or otherwise, and have little to contest with siblings they seldom if ever contact. Because most species are oviparous (hatching from eggs outside the mother’ s body), sibling embryos arc physically separated by shell ...
Douglas W Mock, Geoffrey A Parker
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Incremental markings of enamel in ectothermal vertebrates
Archives of Oral Biology, 2000The deposition of enamel is marked by the formation of growth lines, which reflect incremental growth. Although periodic markings have been observed in enamel of non-mammalian vertebrates, the cross-striation interval and the pattern of enamel deposition have not been formally investigated.
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