character: Howard Florey
topic: Development and mass production of penicillin
grade: 10
subject: Science
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character: Alexander Fleming
topic: Discovery of penicillin
grade: 10
subject: Science
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character: Ernst Boris Chain
topic: Collaboration with Florey on penicillin production
grade: 10
subject: Science
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character: Penicillin
topic: Impact on medicine and antibiotic treatment
grade: 10
subject: Science
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