急求一篇文章全文，多谢！！！# Biology - 生物学
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Cohen T, Gitay-Goren H, Neufeld G, Levi BZ (1992) High levels of
biologically active
vascular endothelial growth factor (VEGF) are produced by the baculovirus
expression
system Growth Factors 7 (2): 131–138.
biologically active
vascular endothelial growth factor (VEGF) are produced by the baculovirus
expression
system Growth Factors 7 (2): 131–138.