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(A, B) Comparison of logarithmic bacterial counts with and without saline irrigation before and after endoscopic submucosal dissection (ESD). The bacterial counts did not significantly differ between the regular group and the clean group before ESD (p=0.4). However, the difference in bacterial counts after ESD was significant between the regular group (without systemic irrigation) and the clean group (with systemic irrigation) (p=0.0004).
