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In vitro interactions of eutherian ova/spermatozoa: significance for orientation/binding of gametes
J P Chaudhuri1, R Sanchez, W B Schill
1University of Giessen School of Medicine, Centre of Dermatology and Andrology, Reproduction Biology Research Unit, FRG.
Archives of Andrology
|January 1, 1991
Abstract:
Ova are observed in vitro to rotate counterclockwise immediately following sperm attachment. This phenomenon was examined in both human-hamster and hamster-hamster systems. The counterclockwise rotation has been found to be directly proportional to the efficiency of in vitro penetration or fertilization. These observations indicate that the eutherian ova possess a definite polarity and that the sperm attachment follow a given geometry.