character: Ignaz Semmelweis
topic: Importance of hygiene in preventing disease transmission
grade: 12
subject: Chemistry
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character: Louis Pasteur
topic: Germ theory and the role of hygiene in disease prevention
grade: 12
subject: Chemistry
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character: Joseph Lister
topic: Antiseptic technique and surgical hygiene
grade: 12
subject: Chemistry
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character: Florence Nightingale
topic: Hygiene practices in nursing and public health
grade: 12
subject: Chemistry
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