The expression plasmid pET32a/SCF-TPO was constructed by VOE gene fusion technique and expressed in E.     ///    Expressed SCF-TPO fusion protein after renaturation has biological activity in promoting the proliferation of MO7e cells..     ///    The biological functions of SCF-TPO fusion protein in MO7e cells was investigated by MTT method after purification with metal chelating chromatography.     ///    "The high expression SCF-TPO fusion protein was obtained, reaching up to 30% of the total cellular protein. "    ///    "Western blot verified the correct fusion expression and MTT results showed the growth promoting effect of the SCF-TPO fusion protein on MO7e cells, with a higher promoting activity at 100 ng/ml. "