Enrichment signals in regions of pair-wise co-binding for FOXA1, FOXA2, and FOXA3. For each FOXA co-binding site, enrichment signals for FOXA1 (red), FOXA2 (orange), FOXA3 (blue), H3K4me3 (black), HNF4α (olive green), and GABP (turquoise) are plotted, centered on the putative FOXA binding site. (a-d) Graphs of the non-normalized data. (e-h) Graphs for each factor normalized to their number of aligned reads. Numbers in brackets for (a-d) are the number of sites with co-binding, as presented in Figure 3.