Differential expression of 40 sRNAs identified from microarray analysis. This heatmap depicts differential expression of 38 novel and 2 known sRNAs across all 54 different growth conditions listed at the bottom (described in Table 1). The first 21 columns were time course experiments used for the initial sRNA identification. Different types of media for B. thailandensis growth are denoted at the top of the heatmap. sRNAs that were further validated are circled on the right. The sRNAs were clustered using Canberra distance and complete linkage clustering and expression levels are depicted using a log2 scale.