character: Cells of the Immune System
topic: Types of Immune Cells and Their Functions
grade: 9
subject: Biology
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character: T Cells
topic: Adaptive Immunity and Cell-Mediated Response
grade: 9
subject: Biology
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character: B Cells
topic: Humoral Immunity and Antibody Production
grade: 9
subject: Biology
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character: Macrophages
topic: Phagocytosis and Antigen Presenting Cells
grade: 9
subject: Biology
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