Fig. 3

Induction of hair follicles in vivo from neonatal dermal cells grafted to immunodeficient mice. a Human dermal fibroblasts and human epidermal keratinocytes express no hair. b Neonatal murine fibroblasts and human neonatal keratinocytes express chimeric hair at 4 weeks after grafting. Scales in cm. c Higher magnification showing density of regenerated hair is similar to that on positive control mice. Scale = 1 mm