15.Mifepristone is an antiprogestin drug belonging to steroid ,which can bind with progesterone receptor to block pregnendione in organ level and have many effect in anti-corepus luteum;
米非司酮是抗孕激素的甾体
药物,它与孕酮受体
合起到阻断靶器官水平孕酮的作用,具有明显抗黄体、抗着床、抗排卵及诱导子宫内膜出血的作用。