Methods: To observe the responses, adverse reactions and peripheral blood immune indexes in 27 cases with malignant pleural effusion after the intrapleural injection of KLT.

方法：观察27例恶性胸腔积液患者腔内注射KLT后的疗效、不良反应及外周血免疫指标变化。

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The PAD activity in pleural effusion and peripheral blood in tumor group had no significant difference(P>0.05), PADA /SADA<1;

肿瘤组患者胸腔积液和自身外周血中ADA活性间差异无显著性意义（P>0.05），PADA/SADA<1；

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