Immunofluorescence microscopy of composite grafts. Cells were stained for the presence of CK14 (A), CK3/12 (D), ∆Np63 (B, E). (C) and (F) are composites of (A, B) and (D, E) respectively. Negative controls are shown in (G), (H) and (I). J Transl Med. 2014; 12: 58. Published online 2014 Mar 3. doi: 10.1186/1479-5876-12-58