近交系TA_3(Tientsin Albino 3 Strain,简称TA_3)是我室培育的低癌系小鼠,其纯代代数已达84代。目前,广泛应用于医药科学研究工作。最近,我们对其染色体核型组成及G,C—显带带型进行了分析,现将结果报告如下: The inbred strain TA_3 (Tientsin Albino 3 Strain, abbreviated as TA_3) is a low-cancer mouse cultivated in our laboratory. Its pure generation algebra has reached 84 generations. At present, it is widely used in medical science research work. Recently, we analyzed the chromosome karyotype and G, C-banding patterns, and report the results as follows: