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44 votes
44 votes
Oxygen diffuses from the

enters red blood cells.
A. Artery, plasma membrane
B. Capillary, Artery
C. Alveolus, capillary
D. Plasma membrane, Alveolus

User PesKchan
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1 Answer

22 votes
22 votes
C alveolus capillaries
User Colddie
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