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Functional profile of highly expressed Salmonella genes during enteritis (A) or typhoid fever (B). Expression levels determined as the number of GFP_OVA copies per cell of promoters associated with physiology, virulence, or unknown function were separately summed. The cumulative activity of promoters associated with nutrient utilization and energy conversion (UTIL), SPI-1, SPI-2, or the PhoPQ regulon (PhoP) is also shown.
