title: Comparison of the binding characteristics of tritiated opiates and opioid peptides [proceedings].
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism*; D004723:Endorphins / Q000378:metabolism*; D004745:Enkephalins / Q000378:metabolism*; D006168:Guinea Pigs; D066298:In Vitro Techniques; D009294:Narcotics / Q000378:metabolism*
chemical_list: D004723:Endorphins; D004745:Enkephalins; D009294:Narcotics