僅用于工業應用或科學研究，不可用于人類或動物的臨床診斷或治療，非藥用.Progesterone is an endogenous steroid hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. A potent agonist of the nuclear progesterone receptor （nPR） with Kd of 1 nM; An agonist of the membrane progesterone receptors（mPRs）; An antagonist of the σ1 receptor.