Figure 8

APH assay performed on MCTS (a, b) and monolayer cell cultures (c, d) derived from human epidermoid (CAEP) and adenocarcinoma (A549) lung cancer cell lines. The cells were treated as follows; untreated ( ; Ctr), exposed to cisplatin 20 μM (; cis 20) for 72 h, irradiated with 20 Gy (; 20 Gy) delivered in about 4 minutes, or exposed to 72-h cisplatin 20 μM followed by irradiation with 20 Gy (; radio + cis20). *P >0.05.