Figure 6: Column chart of percent of viability of AGS cells after 4-hour treatment with free doxorubicin (Dox) and magnetic nanoparticles targeted with folic acid and loaded with doxorubicin (Dox-MNPFA). Comparison of the viability of AGS cells in both treatments with Dox-loaded nanoparticles and free Dox, shows that Dox have a stronger and significant effect on inhibiting cell growth in loaded form on magnetic nanoparticle than the free form of the drug (P-value ≤ 0.15). This chart shows the effective role of nanoparticles in strengthening the function and inhibition of Dox in cell growth.