title: Formolised yolk sac antigen in early diagnosis of Legionnaires' disease.
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D000942:Antigens, Bacterial / Q000032:analysis*; D006801:Humans; D007875:Legionella / Q000276:immunology; D007877:Legionnaires' Disease / Q000175:diagnosis*; D013997:Time Factors; D015017:Yolk Sac / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial