character: Antibody Andy
topic: Proteins in the Immune System
grade: 6
subject: Science
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character: Immune Ivy
topic: How White Blood Cells Work
grade: 6
subject: Science
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character: Bacteria Bill
topic: Pathogens and the Immune Response
grade: 6
subject: Science
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character: Vaccine Vicky
topic: The Importance of Vaccines in Immunity
grade: 6
subject: Science
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