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uftsin是产生于脾脏的一种刺激和增强免疫反应的四肽激素 ,由 IgG重链 Fc段裂解而成 .它是一种弱免疫原 ,相对分子质量 500[1],它能调理增强中性粒细胞的吞噬作用 ,也能激活 NK细胞和巨噬细胞发挥其抗肿瘤作用 . 1977年 Spirer等 [2]首先采用放射免疫分析检测全脾切除后血清 tu
uftsin is a tetrapeptide hormone produced in the spleen that stimulates and enhances the immune response and is cleaved from the IgG heavy chain Fc fragment. It is a weak immunogen with a relative molecular mass of 500 [1] Granulocyte phagocytosis, but also activate NK cells and macrophages to play its anti-tumor effect.In 1977, Spirer et al [2] first using radioimmunoassay after detection of serum spleen tu