With reference to our paper published in “Journal of Biochemical and Molecular Toxicology” entitled “Induction of apoptosisin rat lung epithelial cells by multiwalled carbon nanotubes”. 2009 Sep-Oct; 23(5): 333–344, Correction to Figure 7: Figure 7 in the original manuscript was not repeatable; the experiments were repeated by our laboratory members and have resulted in the reproducible data shown in the corrected figure below prepared to replace the one in the published version. The scientific conclusions of the manuscript are not changed.