character: Robert Koch
topic: Koch's Postulates in Microbiology
grade: 11
subject: Chemistry
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character: Robert Koch
topic: Discovery of Pathogenic Bacteria
grade: 11
subject: Chemistry
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character: Koch's Postulates
topic: Foundation of Germ Theory
grade: 11
subject: Chemistry
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character: Koch's Postulates
topic: Importance in Infectious Disease Research
grade: 11
subject: Chemistry
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