title: Photoproteins as models of drug receptors.
mesh_terms: D000818:Animals; D001464:Barium / Q000494:pharmacology; D002118:Calcium / Q000502:physiology; D066298:In Vitro Techniques; D008163:Luminescent Measurements; D008274:Magnesium / Q000502:physiology; D008954:Models, Biological; D011506:Proteins / Q000378:metabolism*; D011955:Receptors, Drug / Q000378:metabolism*; D037401:Scyphozoa / Q000502:physiology
chemical_list: D011506:Proteins; D011955:Receptors, Drug; D001464:Barium; D008274:Magnesium; D002118:Calcium