Apoptotic smooth muscle cells in pulmonary arteries were detected by TdT mediated dUTP biotin nick end labeling ( TUNEL ), and the expression of Fas protein by pulmonary artery smooth muscle cells was detected using immunohistochemistry technique.

• 通过末端转移酶介导的dUTP切口末端标记法 (TUNEL)检测肺动脉平滑肌细胞凋亡 ,并以免疫组织化学方法研究肺动脉平滑肌细胞Fas表达。