prospective studies with thymic epithelial grafts from young mice show that the akr thymic epithelium can simultaneously induce the amplified expression of retroviral genes , and changes in patterns of thymocyte differentiation that precede the development of leukemia , whereas the ( akr x nzb ) f1 thymic epithelium is deficient in this regard .
C0040113
thymic
C1711423
thymic epithelium