The zona-free hamster egg penetration test: its usefulness in male infertility.
D000818:Animals; D001681:Biological Assay / Q000379:methods*; D006224:Cricetinae; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D007248:Infertility, Male / Q000175:diagnosis*; D008297:Male; D013084:Sperm-Ovum Interactions