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Grading of HDAC expression in the parotid gland’s ducts and acini and the tumour, according to the relative intensity of staining by each antiserum, from 0 to 3, 0 meaning no expression (N. nucleus; C. cytoplasm; *grade 3 staining was also observed in surrounding reactive lymphoid follicles and endothelial cells)
| HDAC | 1 | 2 | 3 | p3 | 4 | 6 | 7 | 8 | p457 |
|---|---|---|---|---|---|---|---|---|---|
| Salivary ducts | 2 | 1 | 3 | 1 | 1 | 2 | 0 | 2 | 1 |
| Acini | 2 | 1 | 1 | 1 | 1 | 2 | 0 | 2 | 1 |
| Tumour | 2* | 3 | 3* | 1 | 3* | 3 | 0* | 2 | 2* |
| Localisation | N | N | N | N | C | C | C | N | C |
