title: Discrete changes in brain calcium with morphine analgesia, tolerance-dependence, and abstinence.
mesh_terms: D000698:Analgesia; D000818:Animals; D001921:Brain / Q000378:metabolism* / Q000648:ultrastructure; D002118:Calcium / Q000378:metabolism*; D004361:Drug Tolerance; D006801:Humans; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D013347:Subcellular Fractions / Q000378:metabolism; D013375:Substance Withdrawal Syndrome / Q000378:metabolism*; D019966:Substance-Related Disorders / Q000378:metabolism*
chemical_list: D009270:Naloxone; D009020:Morphine; D002118:Calcium