tuberculosis | Definition, Cause, Symptoms, & Treatment
https://www.britannica.com/science/tuberculosis
May 02, 2022 · tuberculosis (TB), infectious disease that is caused by the tubercle bacillus, Mycobacterium tuberculosis. In most forms of the disease, the bacillus spreads slowly and widely in the lungs, causing the formation of hard nodules (tubercles) or large cheeselike masses that break down the respiratory tissues and form cavities in the lungs. Blood vessels also can …
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