title: Opiate receptors and morphine-like peptides.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D004723:Endorphins / Q000502:physiology*; D004745:Enkephalins / Q000502:physiology*; D006150:Guanine Nucleotides / Q000494:pharmacology; D006801:Humans; D011957:Receptors, Opioid / Q000187:drug effects / Q000502:physiology*; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D004745:Enkephalins; D006150:Guanine Nucleotides; D011957:Receptors, Opioid