Figure 4.

Two pathological images of treated hepatocellular carcinoma at 7 days. (a) Anti-CD31 immunohistochemistry with USPIO particles counterstaining shows blue iron particles within tumor vessels (black arrows) (magnification ×200). (b) Anti-CD68 immunohistochemistry with USPIO particles counterstaining shows several brown stained macrophages (white arrow heads) and blue iron particles within the structures (black arrows) which are consistent with positively stained vessels on anti-CD31 staining (magnification ×200).