character: IgA
topic: Role of IgA in Mucosal Immunity
grade: 9
subject: Biology
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character: Mucosal Surfaces
topic: Barrier Protection and Immune Response
grade: 9
subject: Biology
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character: Antibodies
topic: Types of Antibodies and Their Functions
grade: 9
subject: Biology
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character: Immune System
topic: Overview of the Immune System and Mucosal Immunity
grade: 9
subject: Biology
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