title: Structural specificity of progesterone for inhibiting cleavage of the rabbit egg in vitro.
mesh_terms: D000818:Animals; D002455:Cell Division / Q000187:drug effects*; D055598:Chemical Phenomena; D002621:Chemistry; D003470:Culture Media; D005260:Female; D066298:In Vitro Techniques; D010063:Ovum / Q000378:metabolism*; D011374:Progesterone / Q000494:pharmacology*; D011817:Rabbits; D013256:Steroids / Q000494:pharmacology*
chemical_list: D003470:Culture Media; D013256:Steroids; D011374:Progesterone