Figure 1 These graphs show plasma 8-OHDG and SI levels among different groups: (a) There is a highly significant increase of 8-OHDG in the smokers’ group ((P≤0.001). (b) 8-OHDG in the control group shows more increased levels in men than women. (c) According to the sex, 8-OHDG levels in the smokers’ group shows more increased 8-OHDG levels in men. (d) Smokers with positive t(8;21) have higher levels of SI. 8-OHDG, 8-hydroxy-2’-deoxyguanosine; SI, smoking index; t(8;21), translocation (8;21).