title: Effects of orotic acid on the development of morphine tolerance.
mesh_terms: D000698:Analgesia; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D002375:Catalepsy / Q000139:chemically induced; D004361:Drug Tolerance / Q000187:drug effects*; D006801:Humans; D007274:Injections, Intraperitoneal; D007279:Injections, Subcutaneous; D008297:Male; D009020:Morphine / Q000008:administration & dosage / Q000494:pharmacology*; D009963:Orotic Acid / Q000008:administration & dosage / Q000494:pharmacology*; D012313:RNA / Q000096:biosynthesis; D051381:Rats; D013239:Stereotyped Behavior / Q000187:drug effects; D013997:Time Factors
chemical_list: D009963:Orotic Acid; D012313:RNA; D009020:Morphine