Fig. 2. Identification of label-retaining cells.

(A) Label-retaining ectodermal and endodermal epithelial cells at the end of four weeks and 1s/2s interstitial cells at the end of one week. (B) EdU retention was also observed in differentiated cells like gland cells and neurons at the end of four weeks and in 4s nematoblasts at the end of one week of chase. Scale bars: 10 µm.