All of the following are features of mycobacterium tuberculosis, except :: (A) Non spore forming, (B) Aerobic bacterium, (C) Measures 0.5-3 micon m, (D) Gram stain as gram positive
Answer is D. M.Tuberculosis is often neutral on gram staining. Once stained it can be decolorised by acid alcohol. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 134