THE EFFECT OF MATERNAL AGE ON TIME OF FIRST LITTERS IN INBRED MICE.
D000375:Aging; D000818:Animals; D001947:Breeding; D005260:Female; D006801:Humans; D008423:Maternal Age; D051379:Mice; D011247:Pregnancy; D011270:Pregnancy, Animal; D012106:Research
AGING; BREEDING; EXPERIMENTAL LAB STUDY; MICE; PREGNANCY; PREGNANCY, ANIMAL