Table 1 The 50 % inhibitory concentration (IC50) of cisplatin in A549 and A549/DDP cells 48 h after drug treatment

4.97 ± 0.32

3.05 ± 0.24^a

2.46 ± 0.21^b

2.44 ± 0.27 ^b

2.48 ± 0.31 ^b

2.45 ± 0.18 ^b

2.40 ± 0.23 ^b

34.15 ± 0.42

4.43 ± 0.28^c

2.51 ± 0.33^{c, d}

2.48 ± 0.25 ^{c, d}

2.54 ± 0.17 ^{c, d}

2.52 ± 0.22 ^{c, d}

2.47 ± 0.19 ^{c, d}

9.92 ± 0.35

3.47 ± 0.25^c

2.68 ± 0.29^c

2.45 ± 0.32^c

2.58 ± 0.23^c

2.50 ± 0.33^c

2.46 ± 0.35^c