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白细胞介素 4 (ｉｎｔｅｒｌｅｕｋｉｎ ,ＩＬ 4 )又称Ｂ细胞生长因子(ＢＣＧＦ)或Ｂ细胞刺激因子 1(ＢＳＦ 1) ,是一种主要由Ｔｈ2细胞亚群产生的细胞因子。ＩＬ 4可促进活化的Ｂ细胞增殖、ＩｇＥ的产生及上调ＦｃεＲⅡ (ＣＤ2 3)分子的表达。ＩＬ 4水平的异常增高 ,见于某
Interleukin 4 (IL 4), also known as B-cell growth factor (BGF) or B-cell-stimulating factor 1 (BSF 1), is a cytokine that is mainly produced by Th2 cell subsets. IL 4 promotes activated B cell proliferation, IgE production and up-regulation of FcεRII (CD23) molecule expression. Abnormal increase in IL 4 levels, found in some