STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Miliary tuberculosis. Light micrograph of a section through a single miliary tubercle (left) in a patient's lung. Tubercles are nodular lesions of infected dead tissue that arise from tuberculosis (TB). Miliary TB is a chronic form of TB where Mycobacterium tuberculosis bacteria have entered the blood or lymph system and spread to other organs. If untreated, this type of TB is fatal. Treatment involves a long course of several antibiotics.
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