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RT-PCR analysis of multiple tumor types shows that Ang2, VEGF, Ang1, VEGFR2, and CD31 are highly expressed in patients with ccRCC versus other tumor types (bladder, lymphoma, lung, laryngeal, ovarian, prostate, gastric, breast, colorectal, and pancreatic tumors). Ang2 and VEGF are also highly expressed in ccRCC versus normal kidney tissue. Data are expressed as means ± SD. *P < 0.05, **P < 0.01, ***P < 0.001.
