character: IgA
topic: Role of IgA in Mucosal Immunity
grade: 9
subject: Biology
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character: Mucosal Immune System
topic: Components of Mucosal Immunity
grade: 9
subject: Biology
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character: Immunoglobulins
topic: Types of Immunoglobulins and Their Functions
grade: 9
subject: Biology
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character: Antibodies
topic: How Antibodies Protect Against Pathogens
grade: 9
subject: Biology
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