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Association between F2RL3 methylation and respirable dust exposure. Scatterplot of F2RL3 CpG_4 methylation (%) versus measured respirable dust in welders (n=53). The DNA methylation was measured using pyrosequencing in DNA isolated from peripheral blood and exposure to respirable dust was measured by air sampling close to the breathing zone on pre-weighed mixed cellulose ester filters. The fit (R2) of the line is 0.31.
