Fig. 2

Cell viability assessment in A549 lung epithelial cells. Cells were treated for 24 h with the indicated concentrations of a CdSO₄ as the positive control b MCA, tebuconazole and Cu c abraded sawdust particles from untreated, MCA-pressure treated and CC-pressure treated wood d eluates of the respective wood particles. Cell viability was assessed using the MTS assay. *Tebuconazole and Cu²⁺ were applied in the respective amounts present in MCA as described in Additional file 1