Fig. 2. Effects of Delta overexpression on differentiation of reconstituted human epidermis. Keratinocytes transduced with empty vector (ev,A,D,G,J), DeltaFl (B,E,H,K) or DeltaDS (C,F,I,L) were grown on DED and stained with antibodies to the proteins shown (green). DAPI was used as a nuclear counterstain (blue). Arrows indicate Ki67-positive cells in the epidermal basal layer. Inserts in A-C represent Ki67 staining only. Bars, 50 µm.