Pharmacological redundancy as an adaptive mechanism in the central nervous system.
D000222:Adaptation, Physiological; D000818:Animals; D002415:Cats; D002490:Central Nervous System / Q000187:drug effects* / Q000502:physiology; D004285:Dogs; D004361:Drug Tolerance; D006801:Humans; D006984:Hypertrophy; D009020:Morphine / Q000494:pharmacology; D009431:Neural Conduction; D013116:Spinal Cord / Q000187:drug effects / Q000502:physiology; D019966:Substance-Related Disorders; D013566:Sympathomimetics; D013569:Synapses / Q000502:physiology; D009435:Synaptic Transmission
D013566:Sympathomimetics; D009020:Morphine