title: Introducing this special issue.
authors.forename: Cees
authors.initials: C
authors.lastname: van Kooten
authors.forename: Jose A
authors.initials: JA
authors.lastname: Villadangos
mesh_terms: D000486:Allergy and Immunology / Q000193:education / Q000266:history*; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D007158:Immunologic Techniques / Q000266:history*; D009426:Netherlands