Fig. 7. Slow-cycling cells divide during head regeneration.

The experiment was performed at one week of chase for interstitial cells and at 2.5–3.5 weeks of chase for epithelial cells. For each time point, 15 regenerating tips (∼0.5 mm) from lower halves that develop into heads were collected. Tips were macerated, stained for EdU and the numbers of cells with complete and partial label were counted. Data pooled from three independent experiments are shown.