Parkinson's disease model animal having alpha-synuclein gene introduced therein. There is provided a transgenic nonhuman mammal characterized in that it has alpha-synuclein gene introduced therein, effecting expression of the gene in neurocytes of the brain, and that the number of dopamine producing neurocytes in the substantia nigra of the brain thereof is significantly lower than that of wild type animal, or provided part thereof.
TRANSGENIC NONHUMAN MAMMAL