title: The pneumococcus and the human host.
mesh_terms: D002473:Cell Wall / Q000276:immunology; D049673:History, 20th Century; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000266:history; D007106:Immune Sera; D007116:Immunization, Passive / Q000266:history; D011008:Pneumococcal Infections / Q000188:drug therapy / Q000266:history* / Q000276:immunology; D011135:Polysaccharides, Bacterial; D012008:Recurrence; D012882:Skin Tests / Q000266:history; D014481:United States
chemical_list: D007106:Immune Sera; D011135:Polysaccharides, Bacterial