Figure 2. Effect of ginsenoside Rb1 on the diameter of retinal vessels and fundus photography. Representative images of fundus photography. A: Control group; B: Diabetes group; C: Ginsenoside Rb1 (20 mg/kg) group; D: Ginsenoside Rb1 (40 mg/kg) group; E: Diameter of retinal vessels. Data are the mean ± SD, (n = 16). ##P < 0.01 compared with the control group; *P < 0.05 or **P < 0.01 compared with the diabetes group.
