Objective To express human vascular endothelial growth factor receptor(VEGFR)-Fc in Chinese hamster ovary(CHO)DG44 cells and determine its biological activity.Methods The sequence VEGFR1D2-VEGFR2D3 encoding the second and the third human immunoglobulin domains of VEGFR2 was synthesized,and fused with human IgG1Fc by overlap PCR to generate VEGFR-Fc fusion gene,which was then subcloned into eukaryotic expression plasmid pD2.The constructed recombinant plasmid pD2-VEGFR-Fc was transfected to DG44 cells in med...