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Effect of acute PMMTM exposure on cytotoxicity of human bronchial epithelial cells. (A) Subconfluent monolayers of BEAS-2B cells were left untreated (nontreatment, NTX) or treated with various concentrations (0.1–10 μg/mL) of PMMTM and PMCON for 48 h and analyzed for cell viability using MTT assay. (B) Cells were treated with Si or Mo at the same concentration range and analyzed for cell viability after 48 h by MTT assay. Data are mean ± SD (n = 4).
