character: Dr. Smith
topic: Germ Theory and Disease Transmission
grade: 9
subject: Science
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character: Louis Pasteur
topic: Microbial Fermentation and Disease Prevention
grade: 9
subject: Science
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character: Robert Koch
topic: Koch's Postulates and Infectious Diseases
grade: 9
subject: Science
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character: Joseph Lister
topic: Antiseptic Techniques in Surgery
grade: 9
subject: Science
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