Journal of Nanomaterials / 2013 / Article / Fig 3

Research Article

Cationic Gelatin Nanoparticles for Drug Delivery to the Ocular Surface: In Vitro and In Vivo Evaluation

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.