character: Dr. Alan Brown
topic: The Immune System and its Response to Pathogens
grade: 12
subject: Biology
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character: Dr. Sarah Lee
topic: Immune Response Mechanisms
grade: 12
subject: Biology
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character: Dr. Michael Chen
topic: Pathogen Recognition by the Immune System
grade: 12
subject: Biology
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character: Dr. Emily Davis
topic: Vaccination and Immunity
grade: 12
subject: Biology
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