The investigation of male infertility.
D000818:Animals; D006224:Cricetinae; D005260:Female; D005306:Fertilization; D006801:Humans; D007248:Infertility, Male / Q000175:diagnosis*; D008297:Male; D011247:Pregnancy; D012661:Semen / Q000032:analysis; D013073:Sperm Agglutination; D013081:Sperm Motility; D013084:Sperm-Ovum Interactions; D013094:Spermatozoa / Q000502:physiology