Fig. 3From: Application of nano-carbon and titanium clip combined labeling in robot-assisted laparoscopic transverse colon cancer surgery a Serosal appearance of colonic lesion labeled by nano-carbon in robot-assisted surgery (The white arrow points to the nano-carbon black stained area). b Mucosal appearance of the surgical removal specimen, which can observe nano-carbon black stained area and two titanium clips (white arrow).Back to article page