Aging phenomena in spermatozoa. II. Estrous cycle length after unsuccessful insemination with spermatozoa of varying age.
D000375:Aging; D000818:Animals; D002417:Cattle; D004971:Estrus; D005260:Female; D005306:Fertilization; D007315:Insemination, Artificial / Q000662:veterinary*; D008297:Male; D011247:Pregnancy; D011270:Pregnancy, Animal; D011555:Pseudopregnancy; D013094:Spermatozoa / Q000502:physiology*; D013997:Time Factors