Cell viability assay. Cell viability assay showing the effect of varying concentrations of nanoparticles on growth inhibition of human lung epithelial (A549) cancer cells cultured in vitro. Results are reported as mean. There is no statistically significant difference between test groups and control groups (p < 0.05).
Yan-zhong et al. Nanoscale Research Letters 2011 6:600 doi:10.1186/1556-276X-6-600