Figure 2.

Morphological changes of L02 cells exposed at various concentrations of ZnO NPs for 24 h. (A) normal and non-ZnO NPs-treated, (B) 10 μg·mL−1, (C) 25 μg·mL−1, (D) 50 μg·mL−1, and (E) 100 μg·mL−1. Magnification ×200.

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