T淋巴细胞可产生多种可溶性淋巴因子。对巨噬细胞、淋巴细胞、白细胞、血小板等细胞可发挥多种作用。近年来又发现了一种免疫球蛋白E结合因子(IgE结合因子)。现将该因子的性质、产生及其功能予以介绍。一、IgE结合因子的性质 IgE结合因子是由巴西钩虫(Nippostrongylus brasiliensis)感染的家兔肠系膜淋巴结细胞的培养物中释放出的一种可溶 T lymphocytes can produce a variety of soluble lymphokines. On macrophages, lymphocytes, white blood cells, platelets and other cells can play a variety of roles. In recent years, another immunoglobulin E binding factor (IgE binding factor) has also been found. Now the nature of the factor, its production and its function to be introduced. I. Properties of IgE Binding Factors IgE binding factors are a soluble form of culture of rabbit mesenteric lymph node cells infected with Nippostrongylus brasiliensis