Surface Architecture of Sperm Tail Entry into the Hamster Oocyte
نویسندگان
چکیده
منابع مشابه
Controls of germline stem cells, entry into meiosis, and the sperm/oocyte decision in Caenorhabditis elegans.
The Caenorhabditis elegans germ line provides an exceptional model for analysis of the molecular controls governing stem cell maintenance, the cell cycle transition from mitosis to meiosis, and the choice of sexual identity-sperm or oocyte. Germline stem cells are maintained in an undifferentiated state within a well-defined niche formed by a single somatic cell, the distal tip cell (DTC). In b...
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Knowledge about the mechanism that establishes embryonic polarity is fundamental in understanding mammalian development. In re-addressing several controversial claims, we recently proposed a model in which mouse embryonic polarity is not specified until the blastocyst stage. Before fertilization, the fully differentiated oocyte has been characterized as "polarized," and we indeed observed that ...
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Fragments of 40 ovaries of various laboratory mammals, including mice, golden hamsters, rabbits and ferrets have been studied. The structures described in this paper were observed in some of the oocytes in the 14-day-old golden hamster ovary. The specimens in which they were present were obtained from 4 animals. After fixation for 60 min in chilled, buffered osmium tetroxide, the blocks were de...
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ژورنال
عنوان ژورنال: Development, Growth and Differentiation
سال: 1987
ISSN: 0012-1592,1440-169X
DOI: 10.1111/j.1440-169x.1987.00123.x