AIM:To understand the role of dopamine D1 receptor in mouse motor coordination,and the possible role of this gene in the etiology of Parkinson's disease.METHODS:The disparities in motor behaviors and weight of WT(wild-type)group and D1(-/-)group were assessed;and the differences in their HE histological and anti-TH(tyrosine hydroxylase)antibody immunohistochemical results were compared.The labeled cells were counted under microscope and analyzed statistically.And contents of TH of the two groups were analyz...