Results 21 to 30 of about 489,615 (166)
Frontiers in Immunology, 2012 The VH replacement process is a RAG-mediated secondary recombination in which the variable region of a rearranged VHDJH is replaced by a different germline VH gene. In almost all human and mouse VH genes, two sequence features appear to be crucial for VH
Yi eSun +4 more
doaj +1 more source
Bulletin of the Mineral Research and Exploration, 2020 The large fossil vertebrates obtained from the alluvial flood-plain deposits of the Kolankaya formation are determined as Skoufotragus laticeps (Andree, 1926) and Hipparion brachypus (Hensel, 1862), as representative elements of palaeomammal faunas ...
Adil Doğan +2 more
doaj +1 more source
Norepinephrine and octopamine: linking stress and immune function across phyla [PDF]
Invertebrate Survival Journal, 2008 In species from three widely divergent phyla (Arthropoda, Mollusca and Chordata) tyrosine derivatives (norepinephrine or octopamine) mediate a response to acute stress.
S A Adamo
doaj +1 more source
Divergent Evolution of Progesterone and Mineralocorticoid Receptors in Terrestrial Vertebrates and Fish Influences Endocrine Disruption [PDF]
arXiv, 2021 There is much concern about disruption of endocrine physiology regulated by steroid hormones in humans, other terrestrial vertebrates and fish by industrial chemicals, such as bisphenol A, and pesticides, such as DDT. These endocrine-disrupting chemicals influence steroid-mediated physiology in humans and other vertebrates by competing with steroids ...
arxiv
Gene regulatory networks that control the specification of neural-crest cells in the lamprey [PDF]
, 2009 The lamprey is the only basal vertebrate in which large-scale gene perturbation analyses are feasible at present. Studies on this unique animal model promise to contribute both to the understanding of the basic neural-crest gene regulatory network ...
Bronner-Fraser, Marianne +1 more
core +1 more source
An investigation into the use of road drainage structures by wildlife in Maryland, USA
Human-Wildlife Interactions, 2017 Culverts have been installed beneath roadways for drainage or to contain existing streams; however, most of them have not been installed to facilitate the passage of wildlife.
James L. Sparks Jr. , J. Edward Gates
doaj +1 more source
The role of transposable elements in the evolution of non-mammalian vertebrates and invertebrates [PDF]
Genome Biology 2010, 11:R59, 2010 Background: Transposable elements (TEs) have played an important role in the diversification and enrichment of mammalian transcriptomes through various mechanisms such as exonization and intronization (the birth of new exons/introns from previously intronic/exonic sequences, respectively), and insertion into first and last exons.
arxiv +1 more source
Evidence for the prepattern/cooption model of vertebrate jaw evolution [PDF]
, 2010 The appearance of jaws was a turning point in vertebrate evolution because it allowed primitive vertebrates to capture and process large, motile prey. The vertebrate jaw consists of separate dorsal and ventral skeletal elements connected by a joint.
Cerny +41 more
core +2 more sources
Vertebrate interval graphs [PDF]
arXiv, 2021 A vertebrate interval graph is an interval graph in which the maximum size of a set of independent vertices equals the number of maximal cliques. For any fixed $v \ge 1$, there is a polynomial-time algorithm for deciding whether a vertebrate interval graph admits a vertex partition into two induced subgraphs with claw number at most $v$. In particular,
arxiv
Parallelisms and Contrasts in the Diverse Ecologies of the Anaplasma phagocytophilum and Borrelia burgdorferi Complexes of Bacteria in the Far Western United States. [PDF]
, 2016 Anaplasma phagocytophilum and Borrelia burgdorferi are two tick-borne bacteria that cause disease in people and animals. For each of these bacteria, there is a complex of closely related genospecies and/or strains that are genetically distinct and have ...
Foley, Janet, Stephenson, Nicole
core +2 more sources