T cells isolated from three 8-week old C57BL6 (A, C) and BALB/c (B, D) spleens were subjected to Chromatin Immunoprecipitation assays with antibodies against Ets factors (A, B) or GATA factors (C, D), as indicated. Eluted chromatin from IPs was used in real-time PCR using primers specific for the Fli1 promoter region in Exon1. Immunoprecipitations were performed on three sets of chromatin, represented as an average in graph, and PCR was run twice in triplicate for each set. Error bars represent standard error. Students T test was used to compare IPs to non-specific IgG within each mouse strain. P-values < 0.05 was considered significant as indicated by (*).