what is present inside our both lungs
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The lung is made up of air sacs found at the end of the bronchiole tubes. The air sacs are called alveoli and is where gaseous exchange in the lungs take place. The alveoli are surrounded with extensive networks of capillaries that aid in the process of gaseous exchange.
AAKN:
But in a one other country,the inside of an old man lung a plant is growing ?
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