character: Emma
topic: Mechanisms of Immune Regulation
grade: 9
subject: Biology
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character: Dr. Smith
topic: Types of Immune Cells
grade: 9
subject: Biology
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character: Professor Lee
topic: Autoimmunity and Immune Response
grade: 9
subject: Biology
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character: Dr. Johnson
topic: Vaccination and Immune Memory
grade: 9
subject: Biology
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