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Figure 3 | BMC Microbiology

Figure 3

From: Characterization of the expression of Salmonella Type III secretion system factor PrgI, SipA, SipB, SopE2, SpaO, and SptP in cultures and in mice

Figure 3

Effect of pH values on the expression of the tagged SPI-1 proteins. Cultures of the tagged strains T-spoE2, T-spaO, T-prgI, T-sptP, T-sipB, and T-sipA were grown in the presence of culture media at pH3.0, 5.0, 7.0, 7.2, and 8.4, as described in Methods and Materials. The values of the relative expression, which are the means from triplicate experiments, represent the ratios for the level of the tagged protein under the pH conditions to the control pH7.0 condition. The standard deviation is indicated by the error bars.

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