Overlap of the anaerobic, iron, and hydrogen peroxide responsive stimulons in N. gonorrhoeae. Genes found to be differentially expressed in response to anaerobiosis, iron, and hydrogen peroxide were compared in order to discover anaerobically regulated genes that were responsive to additional environmental signals. A Venn diagram was constructed to display the extent of overlap between these stimulons. Data for the iron responsive stimulon was derived from Jackson, et al., (2010) . Data for the hydrogen peroxide responsive stimulon was derived from Stohl, et al., (2005) .