从免疫供体的淋巴样器官以及从体外经抗原致敏的巨噬细胞中抽提的 RNA 能把正常未免疫的淋巴细胞转化为免疫活性状态。这种免疫 RNA 制剂能引起细胞免疫反应和抗体合成。最近几年,许多研究者证明了人和动物的淋巴细胞与从免疫供体的淋巴样细胞中抽提的免疫 RNA 一起温育后,能释放出巨噬细胞移动抑制因子(MIF)。同样,在肿瘤抗原存在下,取自癌患者的淋巴细胞和取自动物在切除肿瘤后的淋巴细胞亦可释放白细胞移动抑制因子(LIF)和 MIF。本文第一次报告用带 RNA extracted from lymphoid organs from immunized donors and from antigen-sensitized macrophages in vitro can convert normally un-immunized lymphocytes into immunocompetent states. This immune RNA preparations can cause cellular immune response and antibody synthesis. In recent years, many researchers have demonstrated that human and animal lymphocytes release macrophage migration inhibitory factor (MIF) after incubation with immune RNA extracted from immunized donor lymphoid cells. Similarly, leukocyte migration inhibitory factor (LIF) and MIF may also be released from lymphocytes taken from cancer patients and from lymphocytes taken from animals after tumor excision in the presence of tumor antigens. This article first report with band