title: Specificity in the era of Koch and Ehrlich: a generalized interpretation of Ludwik Fleck's 'serological' thought style.
authors.forename: H
authors.initials: H
authors.lastname: van den Belt
authors.forename: B
authors.initials: B
authors.lastname: Gremmen
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D005858:Germany; D049711:History, Modern 1601-; D008829:Microbiology / Q000266:history*; D011044:Poland