Community structure performed at gamma = 1. For the (A) KR, (B) FDR1 and (C) FDR5 datasets, the heatmap of the correlation matrix is on the left; each row and column represents a single miRNA. Color bars indicate the submodule assignment in each dataset of every miRNA in the heatmap. Color bar segments are labeled with the module they represent. Module 1 is blue, 2 is yellow and 3 is red. Not all miRNAs in each dataset are present in the other two; miRNAs that are absent are white in the color bar. Whisker plots show the log10(expression) of the miRNAs in the submodule. See also Figures S4, S5 and S6 in Additional file 1.