progesterone , 6 alpha-methyl-17 alpha-hydroxyprogesterone acetate , norethisterone and d ( - ) -norgestrel all profoundly inhibited cell mitosis and stimulated reductive ( oestrone -- -- oestradiol-17 beta ) and oxidative ( oestradiol-17 beta -- -- oestrone ) oe2dh activity .
C0033308
progesterone
C0020387
alpha