title: Recent studies on interaction between opioid peptides and their receptors.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D001921:Brain / Q000378:metabolism; D046508:Culture Techniques; D004723:Endorphins / Q000378:metabolism*; D004745:Enkephalins / Q000378:metabolism; D011957:Receptors, Opioid / Q000378:metabolism*
chemical_list: D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid