Light micrograph of a section through a mammalioan lung showing blood vessels (pink) and alveoli (air sacs, white). Alveoli are the site of gaseous ex

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Light micrograph of a section through a mammalioan lung showing blood vessels (pink) and alveoli (air sacs, white). Alveoli are the site of gaseous exchange, where oxygen enters the blood and carbon dioxide is removed.

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Photo credit: © ***DEPENDS ON PIC***/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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