Louis Pasteur (1822-95), French chemist and microbiologist. This double-exposure image shows one of his microscopes and part of a statue, both exhibit

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Louis Pasteur (1822-95), French chemist and microbiologist. This double-exposure image shows one of his microscopes and part of a statue, both exhibits at the Pasteur Museum, Paris. Pasteur's early research in fermentation led to his invention of \pasteurization\", a brief heating of a foodstuff (eg milk) as a preservative measure. He then turned to the biology of bacteria. In 1879 he noticed the effect of stored (\"attenuated\") cultures of bacteria as a vaccine, notably against anthrax. Pasteur also developed a vaccine against the rabies virus, making him world famous. The Institut Pasteur was built in Paris in 1888."

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Photo credit: © PHILIPPE GONTIER/EURELIOS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: discoverer, institut, instrument, louis, microbiologist, microscope, museum, pasteur, pasteurization, pasteurs, portraits, statue, surname