TY - GEN AU - Puig-Duran,E AU - MacKinnon,P C TI - A critical period for positive feedback in immature (21-day-old) rats SN - 0022-0795 PY - 1978///0426 KW - Aging KW - Animals KW - Castration KW - Circadian Rhythm KW - Estradiol KW - pharmacology KW - Feedback KW - Female KW - Luteinizing Hormone KW - blood KW - Male KW - Progesterone KW - Prolactin KW - Rats KW - Sex Factors N1 - Publication Type: Journal Article UR - https://doi.org/10.1677/joe.0.0760311 ER -