character: Ms. Johnson
topic: The Role of White Blood Cells in Immunity
grade: 10
subject: Science
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character: Mr. Smith
topic: Introduction to the Immune System
grade: 10
subject: Science
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character: Dr. Lee
topic: Types of White Blood Cells and Their Functions
grade: 10
subject: Science
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character: Mrs. Davis
topic: How Vaccines Help White Blood Cells in Fighting Infection
grade: 10
subject: Science
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