Effects of photoperiod on cyclicity and serum gonadotropins in the Syrian hamster.
D000818:Animals; D002369:Castration; D002940:Circadian Rhythm; D006224:Cricetinae; D005260:Female; D006062:Gonadotropins / Q000097:blood*; D008027:Light; D010060:Ovulation; D010507:Periodicity
D006062:Gonadotropins