Additional file 17.

Figure S6. Venn diagrams showing the number of differentially expressed genes identified in the comparisons: Since the number of possible intersections between subgroups is very high, to obtain a better visualization, data are subdivided into four diagrams. In (A) it is evident that blue (genes down regulated in DB110 LP vs. DB110 HP comparison) and yellow (genes down regulated in TW30 LP vs. TW30 HP comparison) ovals have only limited overlap and this indicates that genes differentially expressed in parental and mutant strains at different pressures are only partially coincident. The same is true for genes up-regulated in “DB110 LP vs. DB110 HP” and “TW30 LP vs. TW30 HP” comparisons, reported in (B), blue and yellow ovals. In (A) the arrow indicates the genes that have an expression similar to ompH, this number is higher if compared to those having a “ompL like” behaviour (reported in D).

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Campanaro et al. BMC Genomics 2012 13:567   doi:10.1186/1471-2164-13-567