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Outcome of treatment of interferon-gamma Inhalation and chemotherapy in six patients with multidrug-resistant tuberculosis
*Sputum smear: ±, 1-2 organisms/300 fields; 1+, 1-9 organisms/100 fields; 2+, 1-9 organisms/10 fields; 3+, 1-9 organisms/1 field; 4+, >9 organisms/1 field (10). †Sputum culture: -, no colonies seen; ±, <50 colonies; 1+, 100-200 colonies; 3+, 200-500 colonies (almost confluence); 4+, >500 colonies (confluence) (10).
