character: Mr. John Smith
topic: Understanding the Immune System
grade: 9
subject: Science
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character: Dr. Emily Carter
topic: Basic Functions of the Immune System
grade: 9
subject: Science
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character: Ms. Alex Greene
topic: Immune Response Mechanisms
grade: 9
subject: Science
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character: Professor Lisa Ray
topic: Vaccines and Immune Memory
grade: 9
subject: Science
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