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The mean number of signals for chromosome 17 abnormalities and p53 gene mutations in different histological grades of the studied SCC cases
| Grade | Number (total = 20) | Mean number of signals | |
|---|---|---|---|
| Chromosome 17 abnormalities | P53 gene mutation | ||
| Well differentiated SCC | 20 | 3 | 3 |
| Keratinizing moderately differentiated SCC | 8 | 3 | 3 |
| Non-keratinizing moderately differentiated SCC | 4 | 2 | 1 |
| Poorly differentiated SCC | 8 | 1 | 1 |
