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PCR-detected expression of P. gingivalis in normal esophagus mucosa, cancerous and adjacent tissues of ESCC
| Factors | Positive (%) | Negative (%) | p value |
|---|---|---|---|
| ESCC samples (n = 100) | 71 (71) | 29 (29) | <0.0001 |
| Adjacent normal tissue (n = 100) | 12 (12) | 88 (88) | |
| Normal esophageal mucosa (n = 30) | 1 (3.3) | 29 (96.7) |
