Robert Koch (1843 - 1910), German scientist who was one of the two founders (with Pasteur) of the science of bacteriology. Here he is shown working in his laboratory at Kimberley, South Africa, circa 1896-1897. Using a method of staining and growing bacterial cultures, Koch became famous for isolating Bacillus anthracis (1877), the Tuberculosis bacillus (when Koch made his discovery in 1882, TB was still responsible for one in seven of all European deaths) and the Vibrio cholerae (1883) and for his development of Koch's postulates. Koch was awarded the 1905 Nobel Prize in physiology for his work.