title: Factors influencing the positive feedback action of estrogen upon the luteinizing hormone surge in the ovariectomized guinea pig.
mesh_terms: D000375:Aging; D000818:Animals; D002369:Castration; D002940:Circadian Rhythm; D004958:Estradiol / Q000494:pharmacology*; D004971:Estrus; D005246:Feedback; D005260:Female; D006168:Guinea Pigs; D007700:Kinetics; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D011247:Pregnancy; D012737:Sex Factors
chemical_list: D004958:Estradiol; D007986:Luteinizing Hormone