title: Between two centuries: specificity and regulation in immunology.
authors.forename: W E
authors.initials: WE
authors.lastname: Paul
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D000916:Antibody Diversity; D000941:Antigens / Q000276:immunology; D049672:History, 19th Century; D049673:History, 20th Century; D008222:Lymphokines / Q000266:history; D008285:Major Histocompatibility Complex; D014612:Vaccines / Q000266:history
chemical_list: D000941:Antigens; D008222:Lymphokines; D014612:Vaccines