| Caco-2 cells | HT29 cells | |
| Control medium, 48 h | 0.353 (0.044) | 0.454 (0.036) |
| Toxin A 100 ng/ml, 48 h | 0.177 (0.041)* | 0.429 (0.051) |
| Toxin A 1000 ng/ml, 48 h | 0.127 (0.033)* | 0.429 (0.051) |
| Control medium, 72 h | 0.372 (0.044) | 0.443 (0.53) |
| Toxin A, 100 ng/ml, 72 h | 0.127 (0.030)* | 0.435 (0.049) |
| Toxin A, 1000 ng/ml, 72 h | 0.102 (0.028)* | 0.438 (0.050) |
*p<0.0001 versus control medium.