Figure 10From: Pollutant effects on genotoxic parameters and tumor-associated protein levels in adults: a cross sectional study Different smoking categories: association with the number of micronuclei. Category 0: non-smokers; category 1: persons smoked less than 100,000 cigarettes; category 2: persons smoked at least 100,000 but less than 200,000 cigarettes; category 3: persons smoked at least 200,000 cigarettes.Back to article page