04-13-2012, 07:58 PM
Because spermatogonia don't begin to divide and produce spermatocytes until puberty, spermatocyte-and sperm-specific proteins are not present for a significant portion of the time when the immune system is eliminating self-reactive cells. Thus, it is not impossible to find sexually mature males with high levels of anti-sperm antibodies. Such antibodies can be shown to react against and interfere with sperm in vitro. These same males, however, are not necessarily infertile due to features of:
A. spermatogonia.
B. myoepithelial cells.
C. endothelial cells.
D. Leydig cells.
E. Sertoli cells.
A. spermatogonia.
B. myoepithelial cells.
C. endothelial cells.
D. Leydig cells.
E. Sertoli cells.