M cells | Enterocytes | ||||
---|---|---|---|---|---|
FAE | Villus | Crypt | |||
Cytokeratin 1 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 2 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 3 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 4 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 5 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 6 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 7 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 8 | +++/2 | +++/2 | +++/2 | +/2 | |
Cytokeratin 10 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 11 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 13 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 14 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 15 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 16 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 17 | –/0 | –/0 | –/0 | –/0 | |
Cytokeratin 18 | +++/4 | +++/4 | +++/4 | ++/2 | |
Cytokeratin 19 | +++/2 | +++/2 | +++/2 | ++/2 | |
Cytokeratin 20 | +++/4 | +++/4 | +++/4 | (+)/3 | |
Vimentin | –/0 | –/0 | –/0 | –/0 | |
Desmin | –/0 | –/0 | –/0 | –/0 |
Percentage of positive structures: 0%, –; 0–20%, (+); 20–40%, +; 40–60%, ++; 60–100%, +++.
Staining intensity: 0, no immunoreactivity; 1, weakly stained; 2, medium staining; 3, strong staining; 4, very strong staining.