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Mean cytokine levels by group for postoperative day 1 (POD 1) and postoperative day 2 (POD 2). a) TNF-α levels, b) IL-1B levels, c) IL-6 levels, d) IL-8 levels. Lap 12=laparoscopy with 12 mmHg pressure, NOTES air=NOTES with air, Lap 7=laparoscopy with 7 mm pressure, NOTES CO2=NOTES with CO2
