Fig. 2From: Occupational quartz and particle exposure affect systemic levels of inflammatory markers related to inflammasome activation and cardiovascular diseaseImpactor filters with particles from different size fractions (< 0.25—> 2.5 µm; from three separate measurements, where each row represent filters from a separate measurement occasion) collected in two Swedish iron foundries. A distinct brown/red color is observed in the smallest fraction (< 0.25 µm)Back to article page