KGF does not increase post-BMT thymopoiesis in IL-7

^−/−mice. C57BL/6J IL-7^−/− mice were treated with PBS or KGF followed by 1000 cGy irradiation and BMT from congenic CD45.1 donors (n = 4 in each group). Thymic cellularity was analyzed at day 28 after BMT. The thymic cellularity of the PBS- and KGF-treated IL-7^−/− mice is significantly less than that of the nontransplanted IL-7^−/− mice (P < .02), but there is no difference between the PBS and KGF groups.