FIG. 2.

Weight of infected loops recovered from animals 18 h after infection. (a) Weight of control loops inoculated with either CT as a positive control or PBS as a negative control. (b) Weight of loops immunized with wild-type S. typhimurium strain TML, HWSH, or SL1344 or the equivalent aroA mutant. (c) Weight of loops inoculated with S. typhimurium msbB, invA, or ssrA. These mutants were all created in wild-type S. typhimurium SL1344, which is included for comparison. Error bars represent standard deviations. WT, wild type.