Figure 6.

DNA damage as measured by the comet assay. DNA damage as measured by the comet assay (percentage of DNA in tail) in human hepatocyte L02 cells (A) and human embryonic kidney HEK293 cells (B) after exposure to nano ZnO (asterisk, p < 0.05).

Guan et al. Nanoscale Research Letters 2012 7:602   doi:10.1186/1556-276X-7-602
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