character: Dr. Emily Carter
topic: Basic Functions of the Immune System
grade: 9
subject: Science
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character: Professor John Lee
topic: Introduction to the Immune System
grade: 9
subject: Science
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character: Ms. Sarah Thompson
topic: How White Blood Cells Protect Us
grade: 9
subject: Science
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character: Dr. Michael Smith
topic: The Role of Antibodies in Immunity
grade: 9
subject: Science
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