Effect of photoperiod on estrous cycle length in the rat.
D000818:Animals; D004967:Estrogens / Q000378:metabolism; D004971:Estrus / Q000528:radiation effects*; D005260:Female; D008027:Light; D007986:Luteinizing Hormone / Q000378:metabolism*; D010060:Ovulation; D010507:Periodicity; D010902:Pituitary Gland / Q000378:metabolism; D011247:Pregnancy; D011830:Radiation Effects; D051381:Rats; D013997:Time Factors
D004967:Estrogens; D007986:Luteinizing Hormone