Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12864-017-3813-4/MediaObjects/12864_2017_3813_Fig3_HTML.gif)
Evolutionary dynamics of the CHRNA4 liver-specific promoter. a WashU EpiGenome Browser views of the conserved CHRNA4 liver-specific promoter in human and the orthologous sequence alignment in other vertebrate animals. The species without an orthologous sequence in this region were not displayed (except primates and rodents). b WashU EpiGenome Browser views of the conserved CHRNA4 liver-specific promoter in mouse and the orthologous sequence alignment in other vertebrate animals. The species without an orthologous sequence in this region were not displayed