Fig. 2

Heat map − unsupervised hierarchical clustering. Clustering performed on all the samples and on the top 50 microRNAs with the highest standard deviation. The normalized log-transformed Hy3 values were used for the analysis. The colour scale illustrates the relative expression level of a microRNA across all samples: green colour represents an expression level below the mean and red colour represents an expression level above the mean. Legend: n.a. − data not available