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1.What is the structure in the blood vessels where gases are exchanged?

2.Explain how vaccinations work to provide immunity!

Thanks for your help!!

User Prasham
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1 Answer

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Answer:

basically gas exchange happens in alveoli where Oxygen enters in RBC and co2 is released where oxygenated and deoxygenated bloods get seperated

User Hasan Sefa Ozalp
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