fig4
![Fabrication and evaluation of multiple pDNA-hydroxyapatite particles for transfection to HEK293 cells](https://image.oaes.cc/2363933f-95fe-4b99-985a-769c2dbc8393/2546.fig.4.png)
Figure 4. (A) Gene transfection efficiency and (B) cell viability of GFP positive HEK293 cells at different mSBF concentrations with different CaCl2 loading conditions. pDNA-CaP (at pH 7.1) as a standard control is shown in comparison. Results are expressed as mean and SD (n = 4). pDNA: plasmid DNA; CaP: calcium phosphate; mSBF: mineralization modified-solution; SBF: simulated body fluid