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Scientists decode how lungs are damaged in severe COVID-19

Using a novel technique that enables high-resolution imaging of damaged lung tissues, scientists have found the changes caused by severe COVID-19 in the structure of the organ’s blood vessels and air sacs.

The researchers, observed significant changes in the blood vessels, inflammation, and a deposition of proteins and dead cells on the walls of the lungs’ tiny air sacs called alveoli. They said these changes make gas exchange by the organ either difficult or impossible.