Fig. 2From: Effect of preoperative injection of carbon nanoparticle suspension on the outcomes of selected patients with mid-low rectal cancerHistochemical appearance of the tumor tissues from a rectal cancer patient injected with carbon nanoparticle suspension. Tumor cells could be examined clearly under microscopy after being stained by hematoxylin and eosin, indicating that the carbon nanoparticles had no effect on the histochemical observation and diagnosisBack to article page