character: Ignaz Semmelweis
topic: Hand Hygiene and Infection Prevention
grade: 11
subject: Chemistry
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character: Joseph Lister
topic: Antiseptic Surgery Techniques
grade: 11
subject: Chemistry
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character: Louis Pasteur
topic: Germ Theory of Disease
grade: 11
subject: Chemistry
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character: Florence Nightingale
topic: Sanitation and Public Health Practices
grade: 11
subject: Chemistry
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