title: Polyspermic fertilization of hamster eggs in vitro.
mesh_terms: D000818:Animals; D002462:Cell Membrane; D005260:Female; D005306:Fertilization; D066298:In Vitro Techniques; D008297:Male; D008858:Microscopy, Phase-Contrast; D010063:Ovum / Q000166:cytology / Q000502:physiology; D013094:Spermatozoa / Q000502:physiology; D013997:Time Factors