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tuberculosis (too-bur″ku-lo´sis) any of the infectious diseases of humans or other animals caused by species of Mycobacterium and characterized by the formation of tubercles and caseous necrosis in the tissues. The usual causative species are M. tuberculosis and M. bovis. Tuberculosis varies widely in its manifestations and tends to be chronic, lasting for many years. Any organ may be affected, although in humans the lung is the major seat of the disease and the usual portal of entry into the body (see pulmonary tuberculosis). pulmonary tuberculosis. tuberculosis of bones and joints
skeletal tuberculosis. tuberculosis of lungs
pulmonary tuberculosis. tuberculosis of skin
cutaneous tuberculosis. tuberculosis of spine
spinal tuberculosis.
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