character: Louis Pasteur
topic: Germ Theory and Vaccination Advances
grade: 9
subject: Science
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character: Edward Jenner
topic: Smallpox Vaccination Development
grade: 9
subject: Science
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character: Robert Koch
topic: Postulates of Bacterial Pathogens
grade: 9
subject: Science
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character: Joseph Lister
topic: Antiseptic Surgical Techniques
grade: 9
subject: Science
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