character: Mr. Jason Lee
topic: Understanding Antigens and Antibodies
grade: 10
subject: Biology
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character: Dr. Sarah Johnson
topic: Introduction to the Immune System
grade: 10
subject: Biology
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character: Ms. Emily Carter
topic: The Role of B Cells in Immunity
grade: 10
subject: Biology
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character: Mr. David Thompson
topic: Vaccines and Their Relation to Antigens
grade: 10
subject: Biology
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