character: Tessa the T-cell
topic: Functions of the Immune System
grade: 9
subject: Biology
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character: Benny the B-cell
topic: Antibody Production
grade: 9
subject: Biology
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character: Mac the Macrophage
topic: Phagocytosis and Immune Response
grade: 9
subject: Biology
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character: Annie the Antigen
topic: Role of Antigens in Immune Recognition
grade: 9
subject: Biology
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