title: Biochemical and autoradiographic evidence for type 1 and type 2 opiate receptors.
mesh_terms: D000818:Animals; D001345:Autoradiography; D001921:Brain / Q000378:metabolism; D004745:Enkephalins / Q000494:pharmacology; D006160:Guanosine Triphosphate / Q000378:metabolism; D008024:Ligands; D009270:Naloxone / Q000494:pharmacology; D051381:Rats; D011957:Receptors, Opioid / Q000145:classification / Q000378:metabolism*
chemical_list: D004745:Enkephalins; D008024:Ligands; D011957:Receptors, Opioid; D009270:Naloxone; D006160:Guanosine Triphosphate