CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Louis Pasteur. Engraving of the French chemist and microbiologist Louis Pasteur (1822-1895) in his laboratory. Pasteur is considered the greatest physician of all time and "father" of the germ theory of diseases. He believed that diseases were caused by tiny organisms transmitted from person to person. In his laboratory research he developed two vaccines: the first against anthrax, a major disease of cattle and the second against rabies. Pasteur also recognised that wine and beer, under gentle heating, could be preserved from souring. This process is now known as pasteurization and widely applied in the food industry.
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