title: Significance of the equatorial segment of the acrosome of the spermatozoon in eutherian mammals.
mesh_terms: D000177:Acrosome / Q000502:physiology* / Q000648:ultrastructure; D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D006224:Cricetinae / Q000502:physiology*; D005260:Female; D005306:Fertilization; D008297:Male; D013084:Sperm-Ovum Interactions; D013094:Spermatozoa / Q000502:physiology* / Q000648:ultrastructure