title: Enkephalin analogues eliciting analgesia after intravenous injection.
mesh_terms: D000698:Analgesia; D004723:Endorphins / Q000494:pharmacology*; D004745:Enkephalins / Q000008:administration & dosage / Q000138:chemical synthesis / Q000494:pharmacology*; D007275:Injections, Intravenous; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D004745:Enkephalins