Changing pro=oestrous surges of luteinizing hormone in ageing 5-day cyclic rats.
D000375:Aging; D000818:Animals; D004971:Estrus; D005260:Female; D007986:Luteinizing Hormone / Q000378:metabolism*; D010060:Ovulation; D010507:Periodicity; D011247:Pregnancy; D011359:Proestrus; D051381:Rats
D007986:Luteinizing Hormone