title: Structure-CNS activity studies with the enkephalins.
mesh_terms: D000698:Analgesia; D000818:Animals; D001921:Brain / Q000187:drug effects*; D004723:Endorphins / Q000494:pharmacology*; D004745:Enkephalins / Q000032:analysis / Q000494:pharmacology*; D005998:Glycine / Q000494:pharmacology; D008715:Methionine / Q000494:pharmacology; D010649:Phenylalanine / Q000494:pharmacology; D011957:Receptors, Opioid / Q000187:drug effects; D013329:Structure-Activity Relationship; D014443:Tyrosine / Q000494:pharmacology
chemical_list: D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid; D014443:Tyrosine; D010649:Phenylalanine; D008715:Methionine; D005998:Glycine