character: Mr. Alan Brown
topic: The Science Behind Vaccination Development
grade: 9
subject: Science
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character: Dr. Ella Carter
topic: How Vaccines Work in the Body
grade: 9
subject: Science
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character: Ms. Rachel Green
topic: History of Vaccination Techniques
grade: 9
subject: Science
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character: Professor James Lee
topic: The Role of Immunology in Vaccine Research
grade: 9
subject: Science
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