title: Opioid peptides derived from pro-enkephalin A but not that from pro-enkephalin B are substantial analgesics after administration into brain of mice.
mesh_terms: D000700:Analgesics; D000818:Animals; D001921:Brain / Q000187:drug effects*; D004723:Endorphins / Q000494:pharmacology*; D004745:Enkephalins / Q000494:pharmacology*; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D011498:Protein Precursors / Q000494:pharmacology*
chemical_list: D000700:Analgesics; D004723:Endorphins; D004745:Enkephalins; D011498:Protein Precursors; C029992:proenkephalin