Temporary obstructive effect of human cervical mucus on spermatozoa throughout reproductive life: a scanning electron microscopic study.
D002582:Cervix Mucus; D005260:Female; D006801:Humans; D008297:Male; D008593:Menopause; D008598:Menstruation; D011247:Pregnancy; D013094:Spermatozoa / Q000648:ultrastructure*