Figure 2

Microarray data of approximately 16,000 transcripts in un-treated HUVECs from 15 individuals and IM-treated HUVECs from 9 individuals were analysed separately using the clustering method described in this paper. The maximum branch height (max height, an estimate of the degree of bimodal expression) for each transcript was plotted against the -log2 empirical p-value (an estimate of the frequency of that transcript appearing to be bimodally expressed due to chance alone) for the un-treated data set (A) and the IM-treated data set (B). The 21 RNA transcripts for which the empirical p-values were ≤ 0.1 in both the un-treated and IM-treated data sets were identified and are listed alphabetically in panel (C).