Koch Centennial Memorial, March 1982, Vol. 125, No. 3 (part 2 of 2 parts). Contents: Robert Koch, Tuberculosis (TB), & the Subsequent History of Medicine, TB & Medical Science, Epidemiology of TB, Disease Transmission & Contagion Control, TB: Susceptibility & Resistance, Pathogenesis of Pulmonary TB, Microbiology of Tubercle Bacilli, The Immunology of TB, Immunoreactive Substances of Mycobacteria, BCG Vaccination, The Surgery for Pulmonary TB, Clinical Trials in Pulmonary TB, Chemotherapy for TB Today, Chemoprophylaxis, The Tuberculin Skin Test, The Atypical Mycobacteria, Impact of TB on Human Health in the World, & TB: A Portal Through Which to View the Future. Illustrations.