'β Cell Gene Atlas' results page. If a gene is estimated to be present at a high level, it is denoted with a darker cell color. The intermediate abundances are indicated with lighter cell colors. Genes expressed with a probability score of 0.95 or higher are designated with a red border color. The results can be viewed either with by "species" or "tissue" groupings. The actual values used to draw the heatmap or the probability scores can be viewed with "gene rank" or "probability" view, respectively.
Kutlu et al. BMC Medical Genomics 2009 2:3 doi:10.1186/1755-8794-2-3