Fig. 7.

Activity of label-retaining cells in limbal epithelia 0–24 h after corneal wounding in aging mice. Cell proliferation in the limbal epithelia of unwounded and wounded corneas in old mice (1 year). Data are expressed as mean ± SEM of: % IdU-positive cells as a proportion of all cells in limbal epithelium – pink/red), % CldU-positive cells (green), and % of double-labelled cells (yellow) 24 h after wounding. Grey bars show the % of double-labelled cells as a proportion of the IdU-positive cells and represents the percentage of label-retaining stem cells that were dividing in wounded and unwounded eyes. There were no significant differences between wounded and unwounded corneas. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)