Who discovered the first anti-biotic and what was it?

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Alexander Fleming discovered bacteria in a very fascinating way. He had a contaminated bacteria culture and thought it looked strange. He decided to take a closer look at it and what he found was startling. He noticed the that a colony of bacteria had a patch of mold growing close to it. The bacteria close to this patch of mold was not growing so he hypothesized that the mold produced something that inhibited bacteria growth. After many experiments he found that this substance did prohibit bacteria growth an he gave it the name penicillin.

Technology at this time made it impossible to produce large amounts of penicillin. It was not until after World War II that technology was advanced enough to make mass quantities of this antibiotic.

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