character: Professor Mark Davis
topic: How White Blood Cells Fight Infections
grade: 9
subject: Science
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character: Dr. Jane Smith
topic: The Role of Immune System in Fighting Off Pathogens
grade: 9
subject: Science
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character: Professor Alan Johnson
topic: How Vaccines Help White Blood Cells in Infection Defense
grade: 9
subject: Science
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character: Dr. Emily Brown
topic: The Mechanism of Phagocytosis by White Blood Cells
grade: 9
subject: Science
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