character: Platelets
topic: Clotting Mechanism in Circulatory System
grade: 10
subject: Biology
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character: Hemoglobin
topic: Oxygen Transport in Blood
grade: 10
subject: Biology
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character: Red Blood Cells
topic: Functions in the Circulatory System
grade: 10
subject: Biology
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character: White Blood Cells
topic: Immune Response and Function
grade: 10
subject: Biology
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