character: Ms. Sarah Johnson
topic: Types of White Blood Cells and Their Functions
grade: 9
subject: Science
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character: Mr. James Smith
topic: Understanding the Immune System
grade: 9
subject: Science
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character: Ms. Emily Davis
topic: The Role of Lymphocytes in Immunity
grade: 9
subject: Science
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character: Dr. Robert Lee
topic: How Phagocytes Protect the Body
grade: 9
subject: Science
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