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(1822 - 1895) 
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Louis Pasteur was a French biologist and chemist who linked the cause of disease to the presence of germs. He invented a process known as pasteurization in which milk is heated then cooled rapidly to kill all bacteria. Pasteur also discovered that by inoculating a patient with the rabies virus, the patient could be treated for the disease. Pasteur founded a research institute in Paris for the treatment of disease. This institute still operates today and is recognized worldwide for its work. |