character: Dr. Emily Carter
topic: The Role of White Blood Cells in Immunity
grade: 9
subject: Science
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character: Dr. Sarah Johnson
topic: Understanding the Immune System
grade: 9
subject: Science
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character: Professor Mark Davis
topic: How White Blood Cells Fight Infections
grade: 9
subject: Science
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character: Dr. Anna Lee
topic: The Importance of Leukocytes in Disease Resistance
grade: 9
subject: Science
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