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Researchers Put Cloth Face Masks Under a Microscope. The Images Are Out of This WorldBy: Jody Serranoon March 21, 2021 at 6:30 pm Publication: Gizmodo

Cloth face masks have become part of the daily routine for many of us. The first thing I did at the beginning of the pandemic last year was buy some cloth face masks
Categories   national institute of standards and technology, environment, cotton, respirator, vincenzi, nokia n95 smartphone, nap, matter, textile, surgical mask, mask, fiber, medicine, christopher zangmeister, textiles, articles, edward vicenzi, cloth face mask

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