Figure 3. Heat map displaying 45 genes differentially expressed in the bowhead whale liver. Genes with ≥2 log2-fold change and with a Benjamini–Hochberg false discovery rate ≤ 0.05) are shown. The color scheme was used wherein the gradient of red indicates decreased expression, and blue increased expression. Selected genes discussed in the text are highlighted. Hierarchical clustering of samples was based on Pearson's correlation of gene expression data.