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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 694-695 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Photomicrograph of one beam of the meshwork (84-year glaucoma) showing nodular expansions (?) (upper, x 750) and a higher magnification of a single expansion (lower, x 1,500). Both wet preparations stained with polychrome methylene blue Two eyes from patients aged 67 and 84 with bilateral ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 4 (1975), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Triturus torosus has a resting fundic stomach with gastric pits and glands and cell types similar to previously described amphibian species. Lining the surface and the gastric pits are columnar mucus-secreting cells. They differ in morphology and staining reactions from the mucous-neck cells, the second type of mucus-secreting cells. The latter are confined to a limited region at the necks of gastric glands where they empty into the pits and appear to “isolate” the main oxyntic, acid-secreting cells from the surface mucous cells. The gastric glands are lined by a single cell type, the oxyntic cell, which shows features of both the mammalian chief (zymogenic) and parietal (oxyntic) cells and which presumably secretes both enzymes and acid. This cell has a prominent granular endoplasmic reticulum with prezymogen and zymogen granules, numerous mitochondria, and in the apical cytoplasm an extensive system of tubules and tubulovesicles. The membrane bounding these tubules appears identical to the surface plasmalemma, and occasional continuity between the two can be demonstrated. The oxyntic cells have also a few apical microvilli and intercellular but not intracellular canaliculi. Occasional argentaffin or enterochromaffin cells with few granules are scattered among the oxyntic cells. Like other amphibia, the western newt feeds intermittently and thus is a good experimental animal for the study of gastric secretion.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 4 (1975), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The effects of varying intensities of histamine stimulation on cells of the western newt fundic stomach epithelium have been studied. Oxyntic, mucous neck and surface mucous cells all secrete. In the oxyntic cell, the main effects are a movement of zymogen granules toward the apex, the discharge of their contents into the lumen and, eventually, their disappearance from the cytoplasm. Additionally, the tubular membrane elements (tubulo- vesicles) fuse with the apical plasma membrane with a corresponding reduction in their numbers and an increase in microvilli, which eventually are so numerous as to virtually occlude the lumina of gastric glands. Total histamine stimulation results in apparent damage to the oxyntic cells. Mucous neck and surface mucous cells release their mucigen droplets by exocytosis and are grossly changed in appearance also.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0002-9106
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Additional Material: 28 Ill.
    Type of Medium: Electronic Resource
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