Figure 4
From: Comparative toxicogenomic responses of mercuric and methyl-mercury
Hierarchical clustering of microarray experimental replicates. Hierarchical clustering was performed using three independent biological replicates for C. elegans exposed to sub-, low- and high-toxicity HgCl2 and MeHgCl concentrations. Red indicates up-regulation of a gene and blue indicates down-regulation of a gene. The dendrogram indicates the degree to which the expression profiles of individual replicates are similar.