Evaluation of the sensitivity of Fanca^–/– and Fancg^–/– myeloid progenitors to IFN-γ. Methylcellulose cultures that promote the growth of myeloid progenitors from FA-deficient bone marrow were established containing a range of concentrations of IFN-γ in triplicate wells. The respective genotypes are indicated. Data represent the mean ± standard error of the mean (SEM) of 4 independent experiments. *P < .01 comparing the IFN-γ–dependent reduction in myeloid progenitors of Fancc^–/–, Fanca^–/–, and Fancg^–/– myeloid progenitors to wild-type controls using analysis of variance.