Detection of the 3.1 kb RNA species in various specimens
| Diagnosis | Macroscopic aspect of the specimens | No tested | No in which 3.1 kb RNA detected |
| Crohn’s disease | ++ | 9 | 9 |
| + | 5 | 5 | |
| − | 4 | 1 | |
| Ulcerative colitis | ++ | 4 | 0 |
| Diverticulitis | ++ | 3 | 0 |
| Familial polyposis | ++ | 2 | 0 |
| Adenocarcinoma | ++ | 4 | 0 |
| − | 1 | 0 | |
| Lymphoma | ++ | 4 | 0 |
| − | 1 | 0 | |
| Indeterminate IBD | ++ | 4 | 1 |
Macroscopic aspect of the specimens: ++, severely altered; +, altered; −, not altered.