Runx1 chIP analysis. (A) Quantitative PCR (qPCR) analysis of chIP performed against HOXB4. Data were normalized to the percent of pre-IP input for each sample and are expressed as the fold change vs the day 6 + 6 (D6 + 6) control population. Data are representative of at least two independent IPs. (B) qPCR analysis of chIP performed against H3K4me3 and H3K27me3. Data are expressed as the percent of pre-IP input for each sample and are representative of at least 2 independent IPs. **P < .01. (C) qPCR analysis of chIP performed against H3K9Ac. Data are expressed as the percent of pre-IP input for each sample and are representative of at least 2 independent IPs. ***P < .001. (D) qPCR analysis of chIP performed against Dnmt1. Data are expressed as the fold change vs Gapdh control locus for each sample and are representative of at least 2 independent IPs. **P < .01.