title: Increased toxicity of morphine-like analgesics in aggregated mice.
mesh_terms: D000661:Amphetamine / Q000633:toxicity; D000818:Animals; D001522:Behavior, Animal; D010134:Fenclonine / Q000494:pharmacology; D007981:Levorphanol / Q000633:toxicity; D008297:Male; D008614:Meperidine / Q000037:antagonists & inhibitors / Q000633:toxicity; D009020:Morphine / Q000633:toxicity*; D010423:Pentazocine / Q000633:toxicity; D011156:Population Density; D051381:Rats
chemical_list: D007981:Levorphanol; D009020:Morphine; D008614:Meperidine; D000661:Amphetamine; D010134:Fenclonine; D010423:Pentazocine