TABLE 3.

Infectious doses of SS1 ΔmotB and SS1 in FVB/N micea

StrainInfecting doseNo. of mice infected/ no. inoculatedCFU (106)
SS11.3 × 1064/42.7 ± 1.0
1.3 × 1054/41.9 ± 0.28
1.3 × 1042/23.1 ± 1.5
1.3 × 1034/41.6 ± 0.67
1.3 × 1024/40.58 ± 0.15
SS1 ΔmotB5 × 1072/50.14 ± 0.07
5 × 1063/50.036 ± 0.018
5 × 1050/40
5 × 1040/40
  • a Mice were infected with various doses of H. pylori SS1 or SS1 ΔmotB as noted above. After three days the mice were sacrificed and their stomach contents were plated to determine the number of CFU per gram of stomach.

  • b Values are means ± standard deviations of CFU × 106 per gram of stomach of infected mice.