Fig. 2From: Effect of low dose naloxone on the immune system function of a patient undergoing video-assisted thoracoscopic resection of lung cancer with sufentanil controlled analgesia — a randomized controlled trialChanges in OGF levels after surgery. OGF levels are presented as means ± SD. Significantly different from the non-naloxone group at **P<0.01, ***P<0.001. #P<0.05 versus “before surgery” for each groupBack to article page