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Limits of subdomains of H3 hyperacetylation and K4 dimethylation and CTCF interactions in the human globin locus. (A) ChIP was performed using antibodies to diacetylated H3 (K9 and K14), and the results were compared to the pattern for H3K4me2 from Fig. 3A. Error bars represent standard errors of the means (SEM) (n = 3). No Ab, no antibody. (B) ChIP was performed using antibodies to CTCF. No Ab, no antibody. Error bars represent SEM (n = 3).
