title: Systemic administration of endorphins selectively alters open field behavior of rats.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D004644:Emotions / Q000187:drug effects; D004723:Endorphins / Q000008:administration & dosage* / Q000494:pharmacology; D004745:Enkephalins / Q000494:pharmacology; D006120:Grooming / Q000187:drug effects; D007274:Injections, Intraperitoneal; D008297:Male; D008968:Molecular Conformation; D009043:Motor Activity / Q000187:drug effects; D051381:Rats; D011957:Receptors, Opioid / Q000187:drug effects; D012726:Sexual Behavior, Animal / Q000187:drug effects
chemical_list: D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid