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  • 1985-1989  (1)
  • 1970-1974  (1)
  • 1890-1899
  • Life and Medical Sciences  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Plasmacytopoiesis in the pronephros of the carp (Cyprinus carpio) (1970)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 167 (1970), S. 351-369 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: A light and electron microscopy study of the structure of the pronephros of the carp, Cyprinus carpio, revealed lymphocytopoiesis, plasmacytopoiesis and erythrocytopoiesis. In addition to the lymphocytes of various sizes, there were transitional cells which had characteristics of both lymphocytes and plasma cells. Some of the plasmacytoid cells had a configuration of cytoplasmic granules suggestive of the Russell body formation described in higher mammalian forms. When India ink particles were injected into the fish intraperitoneally, macrophages containing this marker could be found in the pronephros. The highly vascular structure of this organ emphasized the close association of the cellular elements with the circulating blood. In view of the cell population of the pronephros and its role as a major source of cells producing antibody, it may well represent a primitive prototype of the more advanced mammalian lymph node.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091670308
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Interactions of aged gametes: In vitro fertilization using in vitro-aged sperm and in vivo-aged ova in the mouse (1987)
    New York, NY : Wiley-Blackwell
    Gamete Research 16 (1987), S. 47-56 
    Details
    ISSN: 0148-7280
    Keywords: spermatozoa ; oocytes ; sperm penetration ; pronuclear stage ; prometaphase stage ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: A study of varying combinations of in vitro-aged sperm and in vivo-aged ova at 3 hr intervals from 0-24 hr resulted in failures at different steps of the fertilization process during in vitro fertilization of mouse ova. Significant decreases caused by sperm aging, ova aging, and sperm × ova aging interaction were found in sperm penetration. Pronuclear formation was not affected by sperm aging and was enhanced by ova aging, and there was a significant effect of sperm × ova aging interaction. Sperm aging significantly influenced the prometaphase stage of the fertilization process. Therefore, it is suggested that the detrimental fertilization effects resulting from aging gametes are due to different mechanisms in sperm and ova, that these mechanisms are affected at different times, and that they affect different steps in the fertilization process.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120160106
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    Paper (German National Licenses)
    Fulltext
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