Locomotor activity of isolated and aggregated mice after lethal doses of morphine sulfate.
D000818:Animals; D008297:Male; D051379:Mice; D009020:Morphine / Q000494:pharmacology*; D009043:Motor Activity / Q000187:drug effects*; D012931:Social Environment; D012934:Social Isolation; D013997:Time Factors
D009020:Morphine