人白细胞转移因子(TF)由于缺乏适宜的动物模型,延缓了转移机制的研究及不同批号制品效价的标准化。本文证实从鼠的脾细胞可制得一种低分子物质,它能将迟发型超敏反应(DTH)转移给受体小鼠;与转移同 Human Leukocyte Metastasis Factor (TF) delays the study of metastasis mechanisms and the standardization of titer of different lots due to the lack of suitable animal models. This article demonstrates that a low molecular weight substance can be produced from murine splenocytes and can transfer delayed-type hypersensitivity (DTH) to recipient mice;