heterologous bridge systems were represented by progesterone-11alpha-oxycarbonyl- [ 125i ] -iodotyrosine methyl ester and 11alpha-hydroxyprogesterone 11-phthalyl- [ 125i ] -iodotyrosine methyl ester , and heterologous site systems by progesterone-3- ( o-carboxymethyl ) oxime- [ 125i ] -iodotyramine , progesterone-12- ( o-carboxymethyl ) oxime- [ 125i ] -iodotyramine , and progesterone-20- ( o-carboxymethyl ) oxime- [ 125i ] -iodohistamine .
C0020387
hydroxyprogesterone
C0033308
progesterone