Research on phytoestrogenic effects and its mechanism of psoralen HAIR PROGESTERONE CONTENTS DURING OESTRUS CYCLE ANDPREGNANCY IN GOATS MILK PROGESTERONE PROFILES IN POSTPARTUM GOATS DEVELOPMENT OF DOUBLE-ANTIBODY ELISAs FOR TESTOSTERONE, PROGESTERONE, ESTRONE AND ESTRIOL DETERMINATION Antifertility Effects of Ilex cornura Lindl. Effects on secretory function of rat gonad by erxian decoction and its disassembled prescriptions STUDY ON MONOCLONAL ANTIBODY PROGESTERONE RADIOIMMUNOASSAY Effects of Jiantai liquid on the expression of estrogen/progesterone receptors in embryo implantation dysfunction mice endometrium DEVELOPMENT OF A SENSITIVE ENZYME IMMUNOASSAY(EIA)FOR DETERMINATION OF PROGESTERONE IN MILK BY A SECOND ANTIBODY TECHNIQUE Extraction of sex hormone from antler velvet with supercritical CO2