character: Ms. Lily Chen
topic: The Role of Antibodies in Disease Prevention
grade: 9
subject: Biology
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character: Mr. John Smith
topic: How Vaccines Work in the Immune System
grade: 9
subject: Biology
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character: Dr. Sarah Johnson
topic: The Importance of Immunization in Public Health
grade: 9
subject: Biology
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character: Prof. Emily Davis
topic: Understanding Antigens and Their Interaction with Antibodies
grade: 9
subject: Biology
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