AFP and infection: Transduction with Ad-CMV-DN-PP2Acα induced overexpression of PP2Ac in L-02, SK-Hep-1, HepG2 and Hep3B cells, whereas infection with Ad-AFpg-DN-PP2Acα only led to the overexpression of PP2Ac in AFP-positive HepG2 and Hep3B cells, but not in AFP-negative L-02 or SK-Hep-1 cells.