character: Dr. John Smith
topic: Introduction to the Immune System
grade: 10
subject: Biology
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character: Ms. Sarah Johnson
topic: Overview of Immune Cells
grade: 10
subject: Biology
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character: Mr. Alex Brown
topic: How Vaccines Work
grade: 10
subject: Biology
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character: Dr. Emily White
topic: The Role of Antibodies in Immunity
grade: 10
subject: Biology
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