[Immunological studies on the soluble protective antigen (SPA) of S. typhi. (1) Relationship between the SPA produced in a synthetic media and protective antigen of S. typhi itself].
D000941:Antigens / Q000032:analysis*; D003470:Culture Media; D012485:Salmonella typhi / Q000276:immunology*
D000941:Antigens; D003470:Culture Media