title: Pulmonary tuberculosis with negative findings on chest x-ray films: a study of 40 cases.
mesh_terms: D000111:Acetylcysteine; D000328:Adult; D000368:Aged; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D008297:Male; D008400:Mass Chest X-Ray / Q000592:standards; D008875:Middle Aged; D009169:Mycobacterium tuberculosis / Q000302:isolation & purification; D009518:New York; D013183:Sputum / Q000382:microbiology; D013270:Stomach / Q000382:microbiology; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000000981:diagnostic imaging*
chemical_list: D000111:Acetylcysteine