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Early development of the olfactory organ in sturgeons of the genus Acipenser: a comparative and electron microscopic study
Formation and morphology of the olfactory organ of vertebrates has been intensely studied in some taxa for more than a century. As a functionally...
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Effects of environmental temperature on the susceptibility of Xenopus laevis and X. wittei (Anura) to Protopolystoma xenopodis (Monogenea)
Immune responses in ectothermic vertebrates and the life-processes of their parasites are profoundly linked to ambient temperature, but the...
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Calmodulin immunolocalization in outer segments of Xenopus laevis photoreceptors
Because adaptation of vertebrate photoreceptors to light is mediated by changes in the level of calcium in their outer segments (OS), proteins that...
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GalNAc moieties in O-linked oligosaccharides of the primordial germ cells of Xenopus embryos
Glycoconjugates could play a role in cell adhesion and migration mechanisms, including the locomotive movements of the primordial germ cells (PGCs)...
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Cannabinoid receptor CB1-like and glutamic acid decarboxylase-like immunoreactivities in the brain of Xenopus laevis
Investigation of the cannabinoid system in a vertebrate group phylogenetically distant from mammals might improve understanding of its physiological...
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The naris muscles in tiger salamander
The naris constrictor muscle, along with naris dilator and naris accessory muscles, controls the opening and closing of the external naris in tiger...
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Occurrence of neurotrophin receptors and transmitters in the develo** Xenopus gut
The ontogeny of gut innervation in the anuran amphibian Xenopus laevis was studied using immunohistochemistry on sections of whole larvae from NF...
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Nitric oxide synthase in the spinal cord of the frog, Xenopus laevis
The expression of nitric oxide synthase was investigated in the spinal cord of the South African clawed frog by NADPH diaphorase histochemistry and...
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Cysteine string proteins are associated with cortical granules of Xenopus laevis oocytes
Cysteine string proteins (csps) are associated with secretory organelles in a wide range of eukaryotic cells. Functional studies of these proteins...
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Structure of the olfactory bulb in tadpoles of Xenopus laevis
The structure of the olfactory bulb in tadpoles of Xenopus laevis (stages 54–56) was studied using axon tracing (with biocytin or low-weight dextran)...
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Thyroid-hormone-dependent and fibroblast-specific expression of BMP-4 correlates with adult epithelial development during amphibian intestinal remodeling
We have identified one of the genes that are up-regulated by thyroid hormone (TH) in Xenopus laevis small intestine as the Xenopus homolog of bone...
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NADPH-diaphorase activity and nitric oxide synthase activity in the kidney of the clawed frog, Xenopus laevis
Nitric oxide (NO) may play a central role in controlling renal hemodynamics and renal salt excretion. Thus, several investigations focused on...
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The spinal nerves innervate putative chemosensory cells in the ventral skin of desert toads, Bufo alvarius
Toads normally obtain water by absorption across their skin from osmotically dilute sources. When hyperosmotic salt solutions are presented as a...
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Intussusceptive microvascular growth in the lung of larval Xenopus laevis Daudin: a light microscope, transmission electron microscope and SEM study of microvascular corrosion casts
The remodeling of the uniform wide, plexus-like capillary bed of the lung of metamorphosing tadpoles of the South African clawed toad Xenopus laevis (D...
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Atrial natriuretic peptide binding sites in the brain and pituitary gland of the toad, Bufo marinus: localisation and receptor characterisation
The distribution and nature of 125 I-atrial natriuretic peptide binding sites have been examined in the brain and pituitary gland of the toad, Bufo...
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Inheritance of Allozyme Loci in Bombina: Second Linkage Group Established
Segregation and linkage relationship of nine allozyme loci, which are fixed for alternative alleles in the European fire-bellied toads, Bombina bombina ...
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Cutaneous glands in the Australian hylid Litoria caerulea (Amphibia, Hylidae)
Ultrastructure of cutaneous glands is described in the Australian hylid Litoria caerulea . Three main types of glands could be distinguished in both...
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Functional anatomy of the photoreceptor and second-order cell mosaics in the retina of Xenopus laevis
Mosaics of photoreceptors, and horizontal and bipolar cells of the Xenopus laevis retina were studied in whole-mount preparations applying...
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Structure and developmental expression of Ikaros in the Mexican axolotl
TheIkaros family of transcription factors plays an essential role in hematopoiesis. We report here the structure of cDNA clones encoding two Ikaros...
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Recombination-Activating Genes, Transposition, and the Lymphoid-Specific Combinatorial Immune System: A Common Evolutionary Connection
The hallmarks that distinguish the gnathostome (jawed vertebrates) adaptive immune system from the immune system of agnathans (jawless fish), which...