CD200hiITGA6hi and CD34hi cells are distinct from KRT15hi stem cells and possess a progenitor cell phenotype.
(A–C) CD200hiITGA6hi cells were intermediate in KRT15 levels (A; n = 3), cell size (B; n = 6), and percent of cells in G0 (C; n = 2) compared with all basal-layer keratinocytes and with KRT15hi cells. (D) As an indication of their distinct identities, the majority of KRT15hi cells expressed almost no CD200 (n = 3). (E and F) CD34hi cells expressed low levels of KRT15 (E; n = 4) and were larger than KRT15hi cells (F; n = 4). FSC, forward scatter.