Methods:TPA levels were measured with enzyme linked immunosorbent assay(ELISA)in the BALF of 60 patients with lung cancer and 30 patients with benign lung diseases.

• 方法:应用酶联免疫法检测60例初次确诊的肺癌和30例肺良性疾病患者BALF中TPA含量,并与血清中含量比较。