Fig. 4.

Functional evaluation. Videolaryngoscopic analysis showing the time course of functional recovery with increasing survival time after injury. (A) Percentage of animals that have recovered the movement of laryngeal folds. (B) Functional score. Means of control, 8 and 12 wpi groups are statistically different from that of 1 wpi (**). The mean of the control group is statistically different from that of 2 wpi (a). Data are presented as mean ± SEM. Statistical evaluations were based on one-way anova test (**P < 0.001; ^aP < 0.05). wpi, weeks post-injury.