Original: Louis Pasteur ( luË Ë i pÃ stÉ , French pronunciation ) December 27 , 1822 â '' September 28 , 1895 ) was a French chemist and microbiologist born in Dole .
Simplified: Louis Pasteur ( December 27 , 1822 â '' September 28 , 1895 ) was a French microbiologist and chemist .