238351.fig.003a
(a)
238351.fig.003b
(b)
238351.fig.003c
(c)
Figure 3: Fluorescent photomicrographs of human corneal epithelial (HCE) cells cultured with (a) culture medium, (b) GP(+), and (c) GP(−) at a concentration of 100 μg/mL for 2 h. The polyanionic dye calcein-AM is well retained within the live cells, which produced intense uniform green fluorescence in the live cells. (Magnification: 40x); GP: gelatin nanoparticles.