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Tier 2 analysis, where the aerosol particle composition is taken into account, showed that exposure to Cu, Pd, and Ag significantly decrease viability of SAEC and had an effect on cytokine expression. The viability of A549 is also significantly reduced after exposure to Cu and Pd aerosol particles. The data are presented as the ratio between exposed and unexposed control cells. The number of data points is represented here as Cu–n, Pd–n, and Ag–n
