character: Mr. David Smith
topic: Basic Components of Blood
grade: 9
subject: Science
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character: Mrs. Jane Doe
topic: Functions of Red Blood Cells
grade: 9
subject: Science
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character: Mr. John Brown
topic: Platelets and Clotting Mechanism
grade: 9
subject: Science
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character: Ms. Emily White
topic: Plasma and its Role
grade: 9
subject: Science
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