Tuberculosis-2 in previous discussion we have discussed Definition of tuberculosis Etiology of tuberculosis Epidemiology of tuberculosis Two types of cells are essential in the formation of TB Human Immunity after infected tubercle bacillus and tuberculin hypersensitivity Outcomes so let’s continue our discussion with Rule of mutual conversion of 3 changes: Primary pulmonary tuberculosis: The lung is the most common site. Previously unexposed and unsensitized persons may be easliy infected. The inhaled bacilli proliferate in the alveoli at the periphery of lungs. Characteristic: The primary complex or Ghon complex Ghon focus Parenchymal tubercle https://www.hanxinclinic.com/index.php/2019/09/14/tuberculosis-2/