character: Ms. Johnson
topic: Understanding the Immune System
grade: 9
subject: Biology
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character: Mr. Smith
topic: Introduction to Microbes and Immunity
grade: 9
subject: Biology
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character: Dr. Lee
topic: The Role of White Blood Cells in Fighting Infection
grade: 9
subject: Biology
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character: Ms. Anderson
topic: Vaccines and Their Impact on the Immune System
grade: 9
subject: Biology
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