RU 486 tested at an equal concentration as progesterone significantly inhibited the production of the blocking factor , while RU 43044 was without effect .
ru 486 tested at an equal concentration as progesterone significantly inhibited the production of the blocking factor , while ru 43044 was without effect .
B-other_organic_compound I-other_organic_compound O O O O O O B-lipid O O O O O O B-protein_family_or_group I-protein_family_or_group O O B-other_organic_compound I-other_organic_compound O O O O