character: Immune System Basics
topic: Overview of the immune system and its components that fight viral infections.
grade: 9
subject: Biology
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character: White Blood Cells
topic: Roles of different types of white blood cells in defending against viruses.
grade: 9
subject: Biology
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character: Antibodies
topic: How antibodies recognize and neutralize viruses.
grade: 9
subject: Biology
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character: Vaccination
topic: How vaccines prepare the immune system to fight viral infections.
grade: 9
subject: Biology
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