title: Dedicated mTEC progenitors stay true, even into adulthood.
abstract: Knowledge about the cells giving rise to and maintaining the thymic structure remains limited. In this issue of Immunity, Sekai et al. (2014) identify a postnatal self-renewing unipotential progenitor population capable of generating thymic medullary cells and lay the foundation for research into thymic regeneration.
authors.affiliation: Department of Immunology, University of Toronto and Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada.
authors.forename: Korosh
authors.initials: K
authors.lastname: Kianizad
authors.affiliation: Department of Immunology, University of Toronto and Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada. Electronic address: jczp@sri.utoronto.ca.
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Zúñiga-Pflücker
mesh_terms: D000818:Animals; D038081:Organogenesis / Q000276:immunology*; D017634:Self Tolerance / Q000276:immunology*; D013234:Stem Cells / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*; D013950:Thymus Gland / Q000166:cytology*