Figure 7From: Characteristics of functionalized nano-hydroxyapatite and internalization by human epithelial cell 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).Back to article page