Self administration of and behavioral dependence on drugs.
D000367:Age Factors; D000818:Animals; D001519:Behavior / Q000187:drug effects; D004336:Drug Antagonism; D004357:Drug Synergism; D004777:Environment; D005823:Genetics; D000882:Haplorhini; D006801:Humans; D051379:Mice; D004364:Pharmaceutical Preparations / Q000008:administration & dosage; D051381:Rats; D012055:Reinforcement Schedule; D012054:Reinforcement, Psychology / Q000187:drug effects; D012651:Self Medication; D012737:Sex Factors; D019966:Substance-Related Disorders
D004364:Pharmaceutical Preparations