Comparison of transcriptional responses in different weak acid stress and acid production conditions. Previously published microarray data on weak acid tolerance and acid production (Table 1) were combined, normalized together, and clustered. This heat map includes genes that were reported to be significant in at least two of the comparisons. Cell wall integrity pathway genes (Figure 4) are indicated in blue in the lists of genes. Gene names are provided in a bigger font, group by group, in the same order as they appear in the rows of the heat map. The coloured bar above the columns of the heat map (just below the column dendrogram) indicates samples which involved the same acid. Column descriptions can be found in Table 1, where they are listed in the order that they appear in this clustering (left to right).