character: Dr. Emily Chen
topic: Biological Mechanisms of Vaccination
grade: 9
subject: Biology
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character: Dr. Robert Hayes
topic: Immune System Response to Vaccines
grade: 9
subject: Biology
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character: Dr. Lisa Patel
topic: Types of Vaccines and Their Biological Impacts
grade: 9
subject: Biology
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character: Dr. Samuel Johnson
topic: The Role of Antibodies in Vaccine Efficacy
grade: 9
subject: Biology
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