character: Professor Bio
topic: The Role of White Blood Cells in the Immune Response
grade: 9
subject: Biology
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character: Dr. Immune
topic: Types of White Blood Cells and Their Functions
grade: 9
subject: Biology
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character: Professor Cell
topic: How the Immune System Recognizes Pathogens
grade: 9
subject: Biology
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character: Ms. Defense
topic: The Mechanism of Antibody Production by B Cells
grade: 9
subject: Biology
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