character: Dr. Emily Turner
topic: The Immune System Basics
grade: 9
subject: Biology
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character: Professor John Smith
topic: Understanding Immunity
grade: 9
subject: Biology
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character: Dr. Sarah Lee
topic: The Role of White Blood Cells
grade: 9
subject: Biology
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character: Mr. David Brown
topic: Antibodies and Pathogens
grade: 9
subject: Biology
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