Figure 3

Knockdown of VEGF expression in vivo. A) Representative photographs of the tumor sections examined by immunohistochemical staining for VEGF (×400 magnification). The assessment of VEGF was based on a cytoplasmic staining pattern. B) The tumors were harvested and assayed for VEGF protein by ELISA. The results are presented as mean ± SD (n = 3 tumors). *P < 0.05 versus pshHK.