Methods: Immunohistochemistry technology and high-pressure liquid chromatography with electrochemical detector (HPLC-EC) were used to evaluated tyrosine hydroxylase (TH) and DA .

• 方法:采用免疫组化技术和高效液相-电化学法(HPLC-EC)分别对酪氨酸羟化酶(TH)、DA进行了含量测定。