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प्रश्न
Tell the contribution of Alexander Fleming.
अति संक्षिप्त उत्तर
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उत्तर
The contribution of Alexander Fleming is the discovery of the antibiotic penicillin. He observed that a mould (Penicillium notatum) produced a substance that inhibited the growth of Staphylococcus bacteria, leading to the development of penicillin as the first effective antibiotic.
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