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Penicillin is an [[antibiotic]] acid that kills bacteria. Its discovery was one of the greatest breakthroughs of the 20th century.
Penicillin is an [[antibiotic]] acid that kills bacteria. Its discovery by the [[Scotland|Scottish]] scientist [[Alexander Fleming]] was one of the greatest breakthroughs of 20th century [[medicine]].
Penicillin is grown from molds and has the general formula of C<sub>9</sub>H<sub>11</sub>N<sub>2</sub>O<sub>4</sub>SR. Its diagramn is as follows:
Penicillin is grown from molds and has the general formula of C<sub>9</sub>H<sub>11</sub>N<sub>2</sub>O<sub>4</sub>SR , where "R" represents a chemical group that is different for different types of penicillin. Its diagram is as follows:
[[Image:penicillin.jpg]]
[[Image:penicillin.jpg|300px]]