Harvard Medical School Study Gives First Evidence That Adult Human Lungs Can Regrow

Published: Jul 20, 2012

Researchers have uncovered the first evidence that the adult human lung is capable of growing back -- at least in part -- after being surgically removed. In an observational study, researchers used MRIs with hyperpolarized helium-3 gas to show that existing alveoli -- the tiny, air-exchange units of the lung -- actually increased in number after a 33-year-old woman had her entire right lung removed due to cancer.

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