character: Dr. Emily Tran
topic: Human Circulatory System
grade: 11
subject: Science
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character: Dr. John Smith
topic: Heart Anatomy and Function
grade: 11
subject: Science
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character: Ms. Maria Lopez
topic: Blood Composition and Function
grade: 11
subject: Science
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character: Mr. Daniel Kim
topic: Transport of Nutrients and Oxygen
grade: 11
subject: Science
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