character: Professor Alan Greene
topic: Antigen Presentation Pathways
grade: 12
subject: Biology
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character: Dr. Emily Carter
topic: Immune System Overview
grade: 12
subject: Biology
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character: Dr. Michael Smith
topic: Role of Antigens in Immunity
grade: 12
subject: Biology
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character: Professor Sarah Johnson
topic: T-cell Activation Mechanisms
grade: 12
subject: Biology
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