Figure 6
In vitro cytotoxicity of the GA and GB nanoparticles and morphology of A549 cells. (A) In vitro cytotoxicity of the GA and GB nanoparticles releasing cordycepin against A549 cells after being cultured for 24 h. (mean ± SD, n =4), control = cordycepin solution (5 μM). (B) Morphology of A549 cells after treating with GA nanoparticles releasing 40 μM cordycepin for 24 h, observed on TEM (arrow: disrupted cell membrane).