(M) Quantification of apoptotic progenitor cells (esg+) measured as GFP+ TUNEL+ cells (n= 9, 9, 9, 9). Data information: Box and whisker plot showing min to max values and the box is extending from the 25th to 75th percentiles. The line in the middle of the box is plotted at the median. P values (*, P<0.0261; **, P<0.005; ***, P<0.0021) calculated by one-way ANOVA with Bonferroni correction. 