character: Professor Sarah Lee
topic: Role of Antibodies in Immunity
grade: 11
subject: Science
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character: Dr. Emily Chen
topic: Overview of the Immune System
grade: 11
subject: Science
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character: Mr. John Smith
topic: Types of Antibodies and Their Functions
grade: 11
subject: Science
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character: Ms. Anita Kumar
topic: How Vaccines Utilize Antibodies for Protection
grade: 11
subject: Science
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