Figure 3.

Boxplots of the number of species in which CTCF binding sites are found in the 46-way multiZ alignments for 23,709 cCTCF (green) and 23,709 randomly selected non-constitutive CTCF (blue) sites.

Li et al. BMC Genomics 2013 14:553   doi:10.1186/1471-2164-14-553
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