M. tuberculosis is a tenacious germ. Armored in a thick, waxy wall impervious to water, the bacterium can lie dormant in the lungs for decades, waiting for a weakness in its human host.
M. tuberculosis is a tenacious germ. Armored in a thick, waxy wall impervious to water, the bacterium can lie dormant in the lungs for decades, waiting for a weakness in its human host.