MiR-155 transgene is differentially expressed in various hematopoietic organs and B-cell subpopulations, as assessed by TaqMan assay. (A) TaqMan assay showed that MiR-155 has the highest expression in the bone marrow (BM = bone marrow; Liv = liver; Sp = spleen; Thy = thymus). Note: Tg1 belongs to the founding line F8, whereas tg2 belongs to the founding line F10. (B) TaqMan assay indicated that MiR-155 transgene is much more expressed in the pre-B cells than in the mature B ones (TgDbl = transgenic mature B cells; TgPE = transgenic pre-B cells; wtDbl = wild-type mature B cells; wtPE = wild-type pre-B cells). Note: Cells were sorted from transgenics belonging to the same founding line, F8.