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Agarose gel of the reverse transcription polymerase chain reaction of VEGF mRNA from control- and Endostar-treated (2.5, 10 and 40 mg/kg) cultured tumor cells. The β-actin gene was used as an internal control. The results indicate a decrease in the level of VEGF mRNA in Endostar-treated (2.5, 10 and 40 mg/kg) cells.
