摘要
Introduction to the disease：Parkinson’s disease（PD）is the second most common neurodegenerative disease,affecting 1–2%of the population over the age of 65.Rigidity,bradikynesia,postural instability and tremor are the principal clinical characteristics of this disease,
Introduction to the disease：Parkinson’s disease（PD）is the second most common neurodegenerative disease,affecting 1–2%of the population over the age of 65.Rigidity,bradikynesia,postural instability and tremor are the principal clinical characteristics of this disease,
