title: Age factors loom in parkinsonian research.
mesh_terms: D015632:1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine; D000367:Age Factors; D000818:Animals; D006801:Humans; D010300:Parkinson Disease / Q000209:etiology*; D011725:Pyridines / Q000494:pharmacology; D012453:Saimiri
chemical_list: D011725:Pyridines; D015632:1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine