title: Within- and between-subjects differences in the effect of morphine in mice.
mesh_terms: D000698:Analgesia; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D005838:Genotype; D051379:Mice / Q000235:genetics*; D009020:Morphine / Q000494:pharmacology*; D009043:Motor Activity / Q000187:drug effects; D012107:Research Design
chemical_list: D009020:Morphine