character: Paul Ehrlich
topic: Early work on antimicrobial compounds and the concept of selective toxicity
grade: 10
subject: Science
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character: Alexander Fleming
topic: Discovery of penicillin and its impact on antimicrobial therapy
grade: 10
subject: Science
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character: Gerhard Domagk
topic: Development of sulfonamide drugs and advances in selective toxicity
grade: 10
subject: Science
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character: Howard Florey
topic: Further research and mass production of penicillin
grade: 10
subject: Science
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