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SMAD4 immunohistochemical labelling results for 27 colorectal cancers with microsatellite instability
| Dukes' classification | ||||||
| Labelling | Normal mucosa | Carcinoma | A | B | C | D |
| +++ | 18 | 16 | 3 | 7 | 5 | 1 |
| ++ | 8 | 10 | 0 | 7 | 1 | 2 |
| + | 1 | 0 | 0 | 0 | 0 | 0 |
| − | 0 | 1 | 0 | 1 | 0 | 0 |
| Total | 27 | 27 | 3 | 15 | 6 | 3 |
