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Distribution of IL-1 positive genotype polymorphisms in periodontitis (divided for disease severity) and controls.
| Severe periodontitis | Moderate periodontitis | Mild periodontitis | Controls | Total | |
|---|---|---|---|---|---|
| IL-1α (+) | 7 | 20 | 21 | 116 | 64 |
| IL-1α (-) | 13 | 19 | 19 | 80 | 131 |
| Total | 20 | 39 | 40 | 96 | 195 |
