Figure 4.

Effect of a transposon inserted in stbC on transcription within the fim gene cluster. RT-PCR assays were used to monitor fim gene transcription in Salmonella enterica subsp. enterica serovar Typhimurium LB5010, the stbC mutant, stbC (pStbC), and stbC (vector) cultured on static LB broth and solid LB agar. The intensities of the bands on the gel were determined by densitometry and are expressed relative to the value for Salmonella enterica subsp. enterica serovar Typhimurium LB5010 grown on LB agar.