Fig. 3. Summary of the in vivo DMS genomic footprints at Eα in T and B lymphoid cells. The analyzed sequence is shown. Protected and hypersensitive sites are indicated for each cell type, as in Figure 2. Previously described and new putative DNA binding sites are indicated by boxes and horizontal lines, respectively. The nucleotide sequence corresponding to the Eα core is shadowed. The nucleotides within the ATF/CREB site involved in the polymorphism between the various cells used in this study are shown in enlarged type letters, with the boldface nucleotides corresponding to the C57BL/6J sequence. The site of the polymorphic deletion is indicated by an arrowhead.