Figure 9
From: Air pollutant particulate matter 2.5 induces dry eye syndrome in mice
Scanning and transmission electron microscopy images showing the ultrastructure of the corneal epithelium in the negative control group, PBS-treated group and PM2.5-treated groups on day 14. In NC and PBS-treated mice, the intact junction existed clearly (A,C, white arrow heads), and epithelial microvilli were extended digitately and arranged neatly (B and D, red arrow heads) (A–D). By contrast, the disrupted junction (E, white arrow head) and disordered corneal epithelial microvilli (F, red arrow head) were observed in PM2.5-treated. Only a few microvilli were observed in the superficial layer of the corneal epithelium in the PM2.5 treatment group, while many more microvilli were recorded in the corneal epithelium after PBS treatment (G, P < 0.05). The data are presented as the mean ± the SD, n = 3. *P < 0.05 vs. control, vP < 0.05 vs. PBS.
