title: Proceedings: Previous environment and responses to morphine.
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D009043:Motor Activity / Q000187:drug effects; D051381:Rats; D012934:Social Isolation
chemical_list: D009020:Morphine