Figure 9From: Comparison of stainless and mild steel welding fumes in generation of reactive oxygen speciesH 2 O 2 production in incubation mixtures containing 250 μg/ml welding fume sample and 1 × 106 RAW 264.7 cells. Data presented are means of ± S.D. for 4 sets of experiments. (*) indicate a significant increase in lipid peroxidation compared to control. (+) indicate significant difference between metal types at the same sizes. (P < 0.05)Back to article page