tokens: High constitutive expression of the IFNgamma-inducible genes , IFN-stimulated gene factor 3 gamma subunit ( ISGF3gamma ) , IFN regulatory factor-1 ( IRF-1 ) , and the cyclin-dependent kinase inhibitor p21 ( WAF1 ) was found in FANCC mutant B lymphoblasts , low-density bone marrow cells , and murine embryonic fibroblasts .