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HOW OLD ARE YOUR LUNGS?

HOW OLD ARE YOUR LUNGS? Lung age: 2 to 3 weeks  Alveoli or air sacs: 1 year All the cells in the lungs are constantly renewing themselves. However, the lungs contain different cells that renew themselves at different rates. The alveoli or air sac cells, deep in the lungs, which are needed for the exchange…

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