Cell death doesn’t significantly change with age in the zebrafish ear. (a) Representative confocal images of inner ear epithelia from young (top row) and old (bottom row) adult zebrafish. The scale bar in the top left image applies to all images. Epithelia are outlined with white dotted lines. (b) Quantification of TUNEL + cells in each epithelium in young (green bars) and old (gray bars) adult zebrafish. There was not a significant effect of age on the number of TUNEL + cells (two-way ANOVA, F1,175 = 0.003, p = 0.96). Data are presented as mean ± 1 s.d. and dots represent individual fish. N = 11–13 epithelia from young fish, n = 14–16 epithelia from old fish.
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