Objective To study the changes of serum interleukin 2(IL 2) and blood T cell subsets levels in acute leukaemia(AL) patients.

目的探讨急性白血病（AL）患者血清白细胞介素- 2 （IL- 2 ）及血液T细胞亚群水平。

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Objective To observe the clinical effect of BCG-PSN on conjunctivitis in spring and on serum levels of T cell subsets and of cytokines.

目的观察卡介菌多糖核酸（BCG-PSN）治疗春季结膜炎的疗效与该药对患者T细胞亚群及细胞因子水平的影响。

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