title: Voluntary drug self-administration by nonhumans: a review.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D004361:Drug Tolerance; D005508:Food Deprivation; D006801:Humans; D007275:Injections, Intravenous; D004364:Pharmaceutical Preparations / Q000008:administration & dosage; D012054:Reinforcement, Psychology; D012646:Self Administration; D019966:Substance-Related Disorders / Q000523:psychology*
chemical_list: D004364:Pharmaceutical Preparations