title: Ludwik Hirszfeld: scientist and humanist.
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D001789:Blood Group Antigens / Q000266:history; D004196:Disease Outbreaks / Q000266:history; D004992:Ethics, Medical / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D011044:Poland; D014438:Typhus, Epidemic Louse-Borne / Q000266:history
chemical_list: D001789:Blood Group Antigens