Clustering analysis of log2 fold changes and <i>t</i>-values.

<p><u>Hierarchical clustering</u> (distance = Pearson correlation; linkage = average) of log2 fold changes (A) and t-values (B) obtained for each platform by comparing tumor and normal samples in the subgroup of commonly detected miRNAs. t-values were calculated using a t-test with random variance model.