title: Hypothalamic ACTH and MSH levels increase in morphine tolerance and decrease after morphine withdrawal.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000378:metabolism*; D000818:Animals; D004361:Drug Tolerance; D006801:Humans; D007031:Hypothalamus / Q000378:metabolism*; D008297:Male; D009074:Melanocyte-Stimulating Hormones / Q000378:metabolism*; D009021:Morphine Dependence / Q000378:metabolism*; D051381:Rats; D011919:Rats, Inbred Strains; D013375:Substance Withdrawal Syndrome / Q000378:metabolism*
chemical_list: D000324:Adrenocorticotropic Hormone; D009074:Melanocyte-Stimulating Hormones