character: Pathogen Patrol
topic: Understanding Antigens and Immune Recognition
grade: 9
subject: Biology
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character: Immune System Explorer
topic: How Antibodies Recognize Pathogens
grade: 9
subject: Biology
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character: Antigen Detective
topic: The Role of Antigens in Immunity
grade: 9
subject: Biology
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character: Vaccine Voyager
topic: Vaccines and Their Impact on Immune Response
grade: 9
subject: Biology
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