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Heart - pumping organ - Free P...

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Heart - circulatory system - H...

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Heart - medicine - organ - Hig...

210×126 2268 754

Heart - medicine - circulatory...

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Blood Vessel - human body - Tr...

128×128 4122 871

Blood Vessel - circulatory sys...

128×128 2225 684

Blood Vessel - health - No Bac...

255×200 3911 1093