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Differential expression of genes involved in general stress responses, signal transduction, and zinc homeostasis. The heat map quantifies the changes elicited in selected genes; the “heat scale” at the right is expressed as the natural logarithm of the fold change. Shown are individual genes of the heme-deficient mutant of E. coli (hemA) and the corresponding wild-type grown anaerobically in defined medium after addition of 100 μM CORM-3 or, for the mutant only, 100 μM iCORM-3.
