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. 2008 Sep 26;117(2):217–222. doi: 10.1289/ehp.11898

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Long-term effects of PM₁₀ on blood DNA methylation in Alu (A) and LINE-1 (B) repeated elements. PM₁₀ concentrations, taken as a measure of usual exposure to particles, was examined in relation to all the measures of DNA methylation performed in the study, regardless of whether they were measured on samples taken on the first day of work (i.e., after 2 days off) or after 3 consecutive days of exposure to PM₁₀ in the plant. Abbreviations: adj, adjusted; nonadj, nonadjusted. Data points represent the average of DNA.