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Paired analysis of bronchoalveolar lavage (BAL) and blood cytokine responses to Mycobacterium tuberculosis catalase-peroxidase (mKatG) detected with enzyme-linked immunospot for interleukin (IL)-17 and interferon (IFN)-γ production. Results for sarcoidosis patients with or without Löfgren's syndrome are presented in separate graphs. Graphs show mean numbers of spots from 106 cells per well after deduction of background. *P < 0·05.
