character: Bella the Blood Cell
topic: Hemoglobin and Oxygen Transport
grade: 10
subject: Biology
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character: Hemo the Hemoglobin
topic: Oxygen Transport Mechanism
grade: 10
subject: Biology
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character: Ollie the Oxygen Molecule
topic: Role of Oxygen in Cellular Respiration
grade: 10
subject: Biology
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character: Billy the White Blood Cell
topic: Immune Response and Blood Health
grade: 10
subject: Biology
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