character: Ms. Lee
topic: The Immune System and Pathogens
grade: 11
subject: Science
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character: Dr. Smith
topic: Overview of Immune Responses
grade: 11
subject: Science
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character: Mr. Johnson
topic: Types of Pathogens
grade: 11
subject: Science
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character: Ms. Davis
topic: Vaccines and Disease Prevention
grade: 11
subject: Science
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