Table 1.

Numbers of CFU and ST strains in tissues 5 days after oral infection

DoseMouseCecumMLNSpleen
CFUSTaCFUSTCFUST
8 × 10711.0 × 103NDb4.8 × 1045150ND
2200ND6ND 0
36.5 × 104ND1.6 × 10324 0
8 × 10814.2 × 104274.0 × 10328 0
28.9 × 104351.0 × 104266.8 × 103ND
33.0 × 104351.2 × 10419 0
3 × 10911.3 × 105309.4 × 103132.9 × 103ND
22.0 × 106324.0 × 10425100ND
35.0 × 104362.5 × 104222.5 × 1041
8 × 10916.0 × 105421.7 × 10431500ND
23.0 × 105366.0 × 104283.6 × 1036
36.0 × 105392.8 × 104275.5 × 103ND
  • a Number of different ST strains in each tissue, calculated by probing colony blots as described in Materials and Methods.

  • b ND, not done.