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Published on: September 11, 2014
Expression of histoincompatibility antigens during spermatogenesis in the rat
Journal of Immunology (Baltimore, Md. : 1950)
|April 1, 1982
Abstract:
The expression of the AgB-SB and -LD (Ia-like) antigens on spermatogenic cells has been investigated by using a protein A-containing Staphylococcus Cowan I rosetting assay. The results show that the Ia-like antigens are present on all spermatogenic cells although the relative expression seems to decrease slightly concomitant with the differentiation. The AgB-SD antigens are detected on spermatogenia, leptotene, and zygotene spermatocytes but not on later developmental stages.
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01:41Spermatogenesis
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male reproductive...
01:22Spermatogenesis
Spermatogenesis is a complex process that involves the development of sperm cells from undifferentiated stem cells in the seminiferous tubules of the testes. The process is essential for the production of mature and functional sperm cells that are capable of fertilizing an egg.
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The process of spermatogenesis can be divided into mitosis, meiosis, and spermiogenesis. During mitosis, the spermatogonia or stem cells divide to produce two identical daughter cells, type A and B spermatogonia. Type-A...