采用荧光定量PCR(real-time polymerase chain reaction, RT-PCR)对86例NSCLC患者、64例肺结核(pulmonary tuberculosis, PTB)患者、39例健康体检者血浆中的miR-34b-3p和miR-302a-5p含量进行测定,同时对比并结合癌胚抗原(carcino-embryonic antigen, CEA)、神经元烯醇化酶(neuron-specific enolase, NSE)和血清骨胶素(cytokeratin 19 fragments 21-1, CYFRA21-1),分析其诊断NSCLC的价值。. The gene discussed is CEACAM5; the disease is pulmonary tuberculosis.