title: Regional alterations in cyclic nucleotide levels with acute and chronic morphine treatment.
mesh_terms: D000818:Animals; D001921:Brain / Q000187:drug effects* / Q000378:metabolism; D002421:Caudate Nucleus / Q000187:drug effects; D000242:Cyclic AMP / Q000378:metabolism*; D006152:Cyclic GMP / Q000378:metabolism*; D004361:Drug Tolerance; D007031:Hypothalamus / Q000187:drug effects; D008297:Male; D009020:Morphine / Q000008:administration & dosage* / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D009928:Organ Specificity; D051381:Rats; D013378:Substantia Nigra / Q000187:drug effects; D013788:Thalamus / Q000187:drug effects; D013997:Time Factors
chemical_list: D009270:Naloxone; D009020:Morphine; D000242:Cyclic AMP; D006152:Cyclic GMP