Figure 4. Protein gels of the GPo1 alkB gene. a, induction with different concentrations of diesel oil: 1, 2%; 2, 1%; 3, protein marker; 4, 0.5%; 5, noninduction; 6, DH5α noninduction. b: induction for different times: 1, DH5α noninduction; 2, 2 h; 3, 4 h; 4, 6 h; 5, protein marker.