Fig. 1From: IgA and IgG antibody detection of mycobacterial antigens in pleural fluid and serum from pleural tuberculous patientsFlow chart of the study design, classification of study participants and diagnostic testing performed. Composite reference standard (CRS) used for categorization of study participants. AFB: acid-fast bacilli; ADA: adenosine deaminase; PLTB: Pleural tuberculosis. Round blankets: numbers refer to the patients submitted to the correspondent diagnostic test. Gray boxes show the final diagnosis and the study groupsBack to article page