Fig. 1

Differentially expressed genes in B. anthracis 34 F2 and BCD22 in response to environmental depletion. The Venn diagrams of the genes with statistical significance (q < 0.05) in each environmental deprivation treatment (Fe, CO₂, and Glu) for 34 F2 and BCD strains. The number of differentially expressed genes for each condition, including overlapping genes identified in two or more conditions, is presented in the circles. Statistical significance (p values) of overlaps of the Venn diagrams determined by hypergeometric distribution are presented. As for the intersections (i.e., five genes in 34 F2 and 27 genes in BCD), p values were much smaller than those of other presented overlaps