Area of the soma of the labeled motoneurons present in control animals and in animals allowed to survive for different times following laryngeal nerve crush injury after the injection of tracer in the posterior cricoarytenoid (PCA) muscle and in the thyroarytenoid (TA) muscle. Data are presented as mean ± SEM. Statistical evaluations were based on one-way anova test (P < 0.001; except differences between TA area of 1 wpi and 2 wpi groups: P < 0.05). (Statistically significant differences with: a, 2 wpi; *, 4 wpi; c, 8 wpi; d, 12 wpi). wpi, weeks post-injury.