title: The male factor in infertility--Nigerian experience.
mesh_terms: D002452:Cell Count; D006801:Humans; D007248:Infertility, Male / Q000175:diagnosis / Q000453:epidemiology* / Q000473:pathology; D008297:Male; D009549:Nigeria; D009845:Oligospermia / Q000453:epidemiology; D013081:Sperm Motility; D013094:Spermatozoa; D013737:Testis / Q000473:pathology