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Agarose gel of the reverse transcription polymerase chain reaction revealing the levels of VEGF mRNA from tumor cells collected from the control- and Endostar-treated (4, 8 and 16 mg/kg) mice. (A) S180 and (B) H22 mice. The β-actin gene was used as an internal control. The results indicate a decrease in the level of VEGF mRNA in the Endostar-treated (8 and 16 mg/kg) mice. VEGF, vascular endothelial growth factor.
