character: Dr. Smith
topic: Physiology of the Cardiovascular System
grade: 9
subject: Science
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character: Mr. Johnson
topic: Blood Circulation and Heart Function
grade: 9
subject: Science
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character: Ms. Lee
topic: The Role of Blood Vessels in the Circulatory System
grade: 9
subject: Science
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character: Prof. Davis
topic: Understanding Heart Health and Disease
grade: 9
subject: Science
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