character: Dr. Immune
topic: Overview of the Immune System and its Functions
grade: 9
subject: Biology
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character: Benny the B-cell
topic: How B-cells Respond to Pathogens
grade: 9
subject: Biology
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character: Tessa the T-cell
topic: The Role of T-cells in Immune Response
grade: 9
subject: Biology
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character: Mac the Macrophage
topic: Phagocytosis: The First Line of Defense
grade: 9
subject: Biology
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