title: Insights into the development of opioid tolerance.
mesh_terms: D000818:Animals; D004361:Drug Tolerance; D006801:Humans; D009020:Morphine / Q000494:pharmacology*; D011493:Protein Kinase C / Q000378:metabolism; D016194:Receptors, N-Methyl-D-Aspartate / Q000037:antagonists & inhibitors / Q000378:metabolism
chemical_list: D016194:Receptors, N-Methyl-D-Aspartate; D009020:Morphine; D011493:Protein Kinase C