title: A clinical trial of folic acid in Parkinson's disease.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001921:Brain / Q000201:enzymology; D002986:Clinical Trials as Topic; D003067:Coenzymes / Q000494:pharmacology; D005492:Folic Acid / Q000008:administration & dosage / Q000009:adverse effects / Q000097:blood / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans; D010300:Parkinson Disease / Q000188:drug therapy*; D051381:Rats; D014446:Tyrosine 3-Monooxygenase / Q000096:biosynthesis
chemical_list: D003067:Coenzymes; D005492:Folic Acid; D014446:Tyrosine 3-Monooxygenase