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  • Transosomes  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Production and fates of unique organelles (transosomes) in ovarian follicles of Gallus domesticus under various conditions (1974)
    Springer
    Cell & tissue research 156 (1974), S. 47-59 
    Details
    ISSN: 1432-0878
    Keywords: Avian follicles ; Oocytes ; Transosomes ; Lysosomes ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Electron microscopy has been utilized to determine fates of sacs of ribosomes (variously termed “transosomes”, “unique organelles”, or “lining bodies”) formed in the follicular cells of avian follicles and subsequently entering-or being taken in-by the oocytes. Small follicles (0.5 mm diameter) of laying hens, a hen afflicted with Marek's disease and prelaying pullets were examined in this regard. In the case of the hen with Marek's disease and the prelaying pullets, sacs of ribosomes were found to be present within the oocyte but those present in the interior of the cell were in the form of digestive vacuoles. In a fourth group of hens, receiving actinomycin D, larger oocytes (2.0 mm diameter) exhibited breakdown of the membranous vesicles in which the sacs of ribosomes entered the oocyte, as well as dissolution of membranes surrounding the forming yolk granules and the membranes of coated vesicles. Annulate lamellae were present in oocytes of the hen afflicted with Marek's disease and appeared within at least 24 hours in oocytes from hens receiving actinomycin D.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220101
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  • 2
    Electronic Resource
    Electronic Resource
    Production and fates of unique organelles (transosomes) in ovarian follicles of Gallus domesticus under various conditions. II (1975)
    Springer
    Cell & tissue research 163 (1975), S. 63-79 
    Details
    ISSN: 1432-0878
    Keywords: Avian follicles ; Oocytes ; Transosomes ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Production and fates of transosomes (sacs of ribosomes made in the follicular cells of an ovarian follicle and subsequently passed to the cytoplasms of the oocyte) have been studied by electron microscopy in ovaries of young chicks, a testosterone-treated hen, aged hens which had ceased laying eggs and a “non-layer” mutant. Study was also made of “primitive yolk” (vacuoles present in both follicular cells and ooplasms of small follicles of normally laying hens). It was found that both transosomes and vacuoles of primitive yolk were present in small oocytes of young chicks, and “non-layer” mutants. However, the transosomes deep within the ooplasms were present within lysosomal vesicles in both of these instances and the vacuoles containing primitive yolk were patently abnormal in the “non-layer” mutant. Very few transosomes or primitive yolk vacuoles were present within the ooplasms of follicles from a testosterone-treated hen or from those of aged hens which were no longer laying. In both of these latter cases such bodies were present in the follicular cells. However, many transosomes were seen to be in the process of being lysed within the cytoplasms of these follicular cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00218591
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    Paper (German National Licenses)
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