Fig. 5.

Use of epithelial stem/progenitor cells to increase HF formation efficiency. a Isolated human HF bulge cell-enriched keratinocytes (KCs) are highly proliferative when compared to non-bulge HFKCs. b The comparison of hair forming capacity between bulge stem cells (SCs) and non-bulge HFKCs. The same number of bulge SCs and non-bulge HFKCs were isolated form HFs and co-transplanted with the same amount of trichogenic dermal cells (usually mouse neonatal dermal fibroblasts) into immunodeficient mice to assess HF forming efficiency