The initial website for the Computation and Society Initiative just got live:
a useful resource on data visualization.
Most chapters discuss obvious things, but chapter 13, 14 is very useful. http://serialmentor.com/dataviz/
curated tissue expression database for mammalians: human, mouse, rat, pig
paper: https://academic.oup.com/database/article/doi/10.1093/database/bay003/4851151 a relevant figure: