TABLE 5.
Water content of feces collected from the distal colons of mice 7 days after infection with derivatives of C. rodentium
| Strain | Characteristic(s) | Water content (%)a |
|---|---|---|
| ICC169 | Wild type | 89.3 ± 4.0b |
| ICA15 | pstCA mutant | 71.6 ± 3.1 |
| ICA15(pAC4) | Trans-complemented pstCA mutant | 84.9 ± 2.9b |
| ICA18 | pstCA phoB double mutant | 90.0 ± 2.8b |
| None (PBS control) | 71.5 ± 5.5 |
a
Seven days after infection, mice were killed. A 3.5-cm length of distal colon was excised, and the colon contents were weighed immediately and after drying at 37°C for 48 h. The difference in the wet versus dry weights was then used to calculate the percentage of water in the colon contents. Data are the mean values ± SD of the results obtained for four or five mice.
b
Significantly greater (P < 0.005) than results for control mice inoculated with PBS (two-tailed Student's t test).