Fig.2. Materials for building hair follicle regeneration model and hair follicle regeneration model. A: Hair follicle outer root sheath separated by microsurgical technique(H.E); B: Number of regenerated hair follicle when hair follicle outer root sheath cultured in vitro; C: Frozen section H.E staining after in vitro culture, glassy membrane could be clearly observed; D~H: H.E staining indicated hair follicle regeneration model structure at Day 1~5 in vitro culture. ORS: Outer Root Sheath; GM: Glassy Membrane; NC: newborn cells; DP: Dermal Papilla. Scale bar(A,D-H) is 5 microns. Scale bar(C) is 10 microns.