Comparison of histone modifications in HSC and muscle satellite cells. ChIP analyses of CD34⁺CD38^lo HSC (▭) and human muscle satellite cells () with antibodies to histone H3Ac, H3K4me2, H3K9me3, and H3K27me3 at representative B-lymphoid (B), T-lymphoid (T), erythroid (E), nonhematopoietic (N), β2-microglobulin (B2m), and muscle specific (Mus) genes. Results are shown as enrichment values (bound/input) relative to the B2m gene (for H3Ac and H3K4me2) or to the THP gene (for H3K9me3 and H3K27me3) and are means and standard deviations of 2 to 5 independent ChIP experiments analyzed in triplicate.