character: Mr. David Johnson
topic: Oxygen Transport Mechanisms in Blood
grade: 12
subject: Chemistry
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character: Dr. Emily Carter
topic: Hemoglobin Structure and Function
grade: 12
subject: Chemistry
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character: Professor Lisa Tran
topic: Chemical Properties of Oxygen in Biological Systems
grade: 12
subject: Chemistry
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character: Mr. Andrew Smith
topic: Role of Iron in Blood Oxygen Transport
grade: 12
subject: Chemistry
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