title: The "bulge-activation hypothesis" does not explain hair follicle cycling but may still be valid.
authors.forename: R
authors.initials: R
authors.lastname: Paus
authors.forename: B M
authors.initials: BM
authors.lastname: Czarnetzki
mesh_terms: D000818:Animals; D017209:Apoptosis; D002454:Cell Differentiation; D004847:Epithelial Cells; D004848:Epithelium / Q000254:growth & development; D005347:Fibroblasts / Q000502:physiology; D006197:Hair / Q000166:cytology / Q000254:growth & development*; D015603:Keratinocytes / Q000502:physiology; D008264:Macrophages / Q000502:physiology; D008544:Melanocytes / Q000502:physiology; D051379:Mice; D051381:Rats; D013234:Stem Cells / Q000502:physiology