character: Mr. Johnson
topic: Structure and Function of Blood Vessels
grade: 11
subject: Biology
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character: Dr. Smith
topic: The Role of Blood Vessels in the Circulatory System
grade: 11
subject: Biology
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character: Ms. Lee
topic: Types of Blood Vessels and Their Functions
grade: 11
subject: Biology
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character: Mrs. Brown
topic: The Circulatory System: An Overview
grade: 11
subject: Biology
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