Fig. 5

Number of days between EBDs before and after cell sheet transplantation. A Graph of the number of days between EBDs performed one year before and after epithelial cell sheet transplantation. The horizontal axis shows the number of EBDs performed before and after transplantation, and the vertical axis shows the number of days between EBDs. B Comparison of EBD intervals between one year before and one year after cell sheet transplantation. Statistical analysis was performed using the unpaired two-tailed Student's t-test. C Comparison of EBD intervals between early (1st to 9th times, 6 months after transplantation) and late (10–19th times, 7–12 months after transplantation) periods after cell sheet transplantation. Statistical analysis was performed using the unpaired two-tailed Student's t test. **P < 0.01. D Comparison of EBD intervals between one year before and early after cell sheet transplantation (1st to 9th times). Statistical analysis was performed using the unpaired two-tailed Student's t test. *P < 0.05. E Comparison of EBD intervals between one year before and late after cell sheet transplantation (10–19th times). Statistical analysis was performed using the unpaired two-tailed Student's t test