character: Antibody Annie
topic: The Defense Mechanism Against Pathogens
grade: 9
subject: Biology
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character: B-cell Bob
topic: Humoral Immune Response
grade: 9
subject: Biology
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character: Pathogen Pete
topic: Types of Pathogens and Their Effects
grade: 9
subject: Biology
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character: T-cell Tina
topic: Cell-mediated Immune Response
grade: 9
subject: Biology
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