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Salmonella enterica subsp. enterica serovar Typhimurium LB 5010 and the stbC mutant grown on MSRV agar medium. (a) Salmonella enterica subsp. enterica serovar Typhimurium LB5010 did not exhibit any “halo” appearance on the agar surface. (b) a gray-white zone was observed extending from the inoculated drop of the stbC mutant.
