Fig. 4From: Organism-environment interactions and differential gene expression patterns among open-coastal and estuarine populations of Porphyra umbilicalis Kützing (Rhodophyta) in the Northwest AtlanticHeat map showing expression of all contigs within the RNA-seq libraries annotated as GO:0006807, nitrogen metabolism. The gray dotted center line represents mean expression. Yellow to white shades represent expression above the mean; orange to red shades represent expression below the meanBack to article page