title: Ultrastructure of sperm penetration of house fly eggs.
mesh_terms: D000177:Acrosome / Q000648:ultrastructure; D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D005260:Female; D005306:Fertilization; D006793:Houseflies / Q000502:physiology*; D008297:Male; D009865:Oocytes / Q000648:ultrastructure; D010058:Oviposition; D010063:Ovum / Q000648:ultrastructure*; D013084:Sperm-Ovum Interactions; D013094:Spermatozoa / Q000648:ultrastructure*; D014817:Vitelline Membrane / Q000648:ultrastructure