title: Comments from the Editor-in-Chief.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Arceci
mesh_terms: D000818:Animals; D006646:Histiocytosis, Langerhans-Cell / Q000097:blood* / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology; D006801:Humans; D007801:Langerhans Cells / Q000502:physiology*; D009369:Neoplasms / Q000209:etiology; D009503:Neutropenia / Q000151:congenital / Q000235:genetics; D010586:Phagocytes / Q000502:physiology*