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本文对26的小儿肺炎患者进行了T细胞亚群及CD20检测，发现患儿外周血T细胞亚群有明显改变，表现为CD3＋、CD4＋、CD4＋／CD8＋值明显降低；CD20＋值正常／或升高；基本治愈后复查T细胞亚群，均有明显回升。提示小几肺炎患者均有不同程度一过性的免疫功能低下，主要为细胞免疫功能的降低，而体液免疫功能正常／或增高．我们在临床上对一些症状反复、迁延不念、有其它合并症的患儿，在一般治疗的同时，佐以购床因子D治疗，可明显改善症状、缩短病程，取得良好疗效。
In this paper, 26 T-cell subsets and CD20 were detected in children with pneumonia and found that T lymphocyte subsets in peripheral blood of children were significantly changed, showing CD3 +, CD4 +, CD4 + / CD8 + decreased significantly; CD20 + normal / elevated ; Basically cured after review of T cell subsets, were significantly recovered. Tip of a few patients with pneumonia have varying degrees of transient immunocompromised, mainly for the reduction of cellular immune function, and humoral immune function was normal / or increased. We in the clinical symptoms of repeated, persistent not read, there are other complications of children, in general treatment, accompanied by the purchase of bed factor D treatment, can significantly improve the symptoms and shorten the course of the disease, and achieved good results.