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Biology, 29.05.2020 16:57 maggie123456751

What is the primary role of the pulmonary vein?

delivering oxygen-poor blood to the left side of the heart

delivering oxygen-poor blood to the right side of the heart

delivering oxygen-rich blood to the left side of the heart

delivering oxygen-rich blood to the right side of the heart

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What is the primary role of the pulmonary vein?

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