Electrophoresis identification of pGEM-CYP2D6 and pREP9-CYP2D6 recombinants. Lane 1: Marker (λ/EcoR I and Hind III), 2: PCR products of CYP2D6 (1.543 kb), 3: Recombi-nant of pGEM-CYP2D6 digested by Xho I and BamH I, 4: pGEM-T vector (3 kb), 5: Recombinant of pREP9-CYP2D6 digested by Xho I and BamH I, 6: pREP9 vector (10.5 kb).