Figure 3. miRNA expression correlations based on TCGA breast cancer data (primary tumors).

Hierarchical clustering illustrates intra- and inter-cluster relationships of pairwise comparisons of miRNAs located on chromosomes 14, 21, X and 13. Chromosomal assignments (left color bar) and color-coded Spearman's rho correlation coefficients (blue: low, red: high) are indicated.