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To improve the accumulation of recombinant human epidermal growth factor (hEGF) in transgenic tobacco, a highly effective vector was constructed and transformed via Agrobacterium tumefaciens. The hEGF content in transgenic tobacco was up to 0.3% of the total soluble protein. Using the Vero E6 cell expansion assay and the MTT method for cell proliferation, hEGF produced by transgenic tobacco significantly...
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