title: Dopamine and methionine-enkephalin in human brain.
mesh_terms: D000368:Aged; D001479:Basal Ganglia / Q000032:analysis; D001923:Brain Chemistry; D004298:Dopamine / Q000032:analysis*; D004744:Enkephalin, Methionine / Q000032:analysis*; D005625:Frontal Lobe / Q000032:analysis; D006624:Hippocampus / Q000032:analysis; D006801:Humans; D010300:Parkinson Disease / Q000378:metabolism*; D013378:Substantia Nigra / Q000032:analysis; D013681:Tegmentum Mesencephali / Q000032:analysis
chemical_list: D004744:Enkephalin, Methionine; D004298:Dopamine