Fig. 3

Giemsa staining of human erythrocyte smears. Human erythrocytes were incubated with amorphous SiNPs for 2 h at different concentrations ( 0, 10, 20, 50, and 100 μg/mL). Arrows represented the swelling erythrocytes; triangles represented the deformed erythrocytes; five-point stars represented the erythrocyte membrane fragments. The magnification was ×400. Scale bars are 50 μm