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.