title: High specific acitivity labelling of typhoid antigen.
mesh_terms: D000942:Antigens, Bacterial; D002860:Chromium Radioisotopes; D006801:Humans; D007553:Isotope Labeling / Q000379:methods*; D011233:Precipitin Tests; D012485:Salmonella typhi / Q000276:immunology*; D014435:Typhoid Fever / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial; D002860:Chromium Radioisotopes