title: Radioimmunoassays to determine the presence of progesterone and estrone in the starfish Asterias rubens.
mesh_terms: D000818:Animals; D003429:Cross Reactions; D004970:Estrone / Q000032:analysis*; D008832:Microchemistry; D011374:Progesterone / Q000032:analysis*; D011708:Pylorus / Q000032:analysis; D011863:Radioimmunoassay; D013215:Starfish / Q000032:analysis*
chemical_list: D004970:Estrone; D011374:Progesterone