title: In vitro interactions of eutherian ova/spermatozoa: significance for orientation/binding of gametes.
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.
authors.affiliation: University of Giessen School of Medicine, Centre of Dermatology and Andrology, Reproduction Biology Research Unit, FRG.
authors.forename: J P
authors.initials: JP
authors.lastname: Chaudhuri
authors.forename: R
authors.initials: R
authors.lastname: Sanchez
authors.forename: W B
authors.initials: WB
authors.lastname: Schill
mesh_terms: D000818:Animals; D002465:Cell Movement; D006224:Cricetinae; D005260:Female; D005306:Fertilization / Q000502:physiology*; D008297:Male; D008647:Mesocricetus; D010063:Ovum / Q000502:physiology; D012399:Rotation; D013084:Sperm-Ovum Interactions / Q000502:physiology*; D013094:Spermatozoa / Q000502:physiology