title: Bull sperm as an internal control in the sperm penetration assay.
authors.affiliation: Department of Medicine, Harbor-UCLA Medical Center, Torrance 90509.
authors.forename: R Z
authors.initials: RZ
authors.lastname: Sokol
mesh_terms: D000818:Animals; D002417:Cattle; D006224:Cricetinae; D005260:Female; D006801:Humans; D007248:Infertility, Male / Q000503:physiopathology*; D008297:Male; D011786:Quality Control; D013084:Sperm-Ovum Interactions; D013094:Spermatozoa / Q000502:physiology*