Figure 2. Effects of mir-181ab1 deletion on normal development.
(A and B) Effects of germline deletion of mir-181ab1 on (A) T lymphocyte and (B) B lymphocyte development (*, p<0.05, Mann-Whitney rank sum tests). (C) Effects of germline deletion of mir-181cd on CD8 thymocyte development. (D) Effects of mir-181a-1 ectopic expression on DP thymocyte development determined by the OP9-DL1 assay. (E) Effects of Cre-mediated deletion of mir-181ab1 on DP thymocyte development determined using the OP9-DL1 assay. (F) Effects of germline mir-181ab1 deletion and mir-181cd deletion on DP thymocyte development in the OP9-DL1 assay. (G and H) Effects of induced deletion of the mir-181ab1 alleles on thymocyte development in vivo. CreER:mir-181ab1+/+ and CreER:mir-181ab1f/f mice were injected with tamoxifen four times at two-day intervals to induce the deletion of mir-181ab1 alleles and analyzed at day 5 after the last tamoxifen injection to determine (G) thymic cellularity and (H) CD4/CD8 profiles. Representative results of two independent analyses are summarized or presented in (G) and (H).