character: Dr. John Smith
topic: The Immune System and Vaccines
grade: 10
subject: Science
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character: Lisa Yang
topic: How Vaccines Work in the Immune System
grade: 10
subject: Science
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character: Professor Emily Green
topic: The Role of Antibodies in Vaccination
grade: 10
subject: Science
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character: Dr. Mark Thompson
topic: History and Development of Vaccines
grade: 10
subject: Science
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