title: Discovery and rediscovery.
authors.affiliation: Intramural Research Program, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892.
authors.forename: S G
authors.initials: SG
authors.lastname: Cohen
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D005197:Famous Persons; D049668:History, 15th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D010678:Philately