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El-Sayed WM, Aboul-Fadl T, Roberts JC, Lamb JG, Franklin MR.El-Sayed WM, et al.Toxicol In Vitro. 2007 Feb;21(1):157-64. doi: 10.1016/j.tiv.2006.09.025. Epub 2006 Oct 7.Toxicol In Vitro. 2007.PMID: 17110078Free PMC article.
Li L, Xie Y, El-Sayed WM, Szakacs JG, Roberts JC.Li L, et al.Life Sci. 2004 Jun 11;75(4):447-59. doi: 10.1016/j.lfs.2003.12.018.Life Sci. 2004.PMID: 15147831
El-Sayed WM, Aboul-Fadl T, Lamb JG, Roberts JC, Franklin MR.El-Sayed WM, et al.Toxicology. 2006 Mar 15;220(2-3):179-88. doi: 10.1016/j.tox.2005.12.016. Epub 2006 Jan 31.Toxicology. 2006.PMID: 16451816