the pregnancy terminating action of immunoglobulins to ovine lh ( days 6 , 7 & 8 ) and hcg ( days 8 , 9 & 10 ) was counteracted by administration of 2 mg medroxyprogesterone acetate on days 6 , 9 and 12 , indicating the importance of progesterone in the maintenance of pregnancy in the mouse .
C0032961
pregnancy
C0033308
progesterone