title: History of immunology. Development of the concept of immunologic specificity, I.
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D000818:Animals; D000918:Antibody Specificity; D000937:Antigen-Antibody Reactions; D001530:Belgium; D000939:Epitopes; D005858:Germany; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D049691:History, Medieval; D049711:History, Modern 1601-; D006801:Humans; D010600:Pharmacology / Q000266:history; D010686:Philosophy, Medical
chemical_list: D000939:Epitopes