Dynamics of programmed cell death as determined by TUNEL assay in the normal and regenerating RNC. (A) Relative abundance of all TUNEL-positive cells (irrespective of their phenotype) normalized to the total number of cells in the tissue. (B) Proportion of TUNEL-positive ERG1+ glial cells in relation to the total number of TUNEL-positive cells. (C) Proportion of TUNEL-positive ERG1+ glial cells in relation to the total number of ERG1+ glial cells. Results are represented as mean (percentage) ± standard error. *P < 0.05, **P < 0.01, ***P < 0.001.