fig4

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