A 33-year-old soldier has recent weight loss, night sweats, fever, and cough. Results of a PPD (Tuberculin) test show redness and swelling at the site of injection. Radiograph results of the chest show bilateral upper lobe involvement and mediastinal and hilar lymphadenopathy. Which of the following describes the microbe causing this disease?
A. Gram-negative bacillus
B. Acid-fast staining filamentous
C. Gram-positive coccus
D. Gram-positive bacillus
E. Acid-fast staining bacillus
Answer: E. Acid-fast staining bacillus
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