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Testing 2020 Issue 2 Twitter

Illustration for Testing story for Stanford Medicine magazine issue on COVID-19. Illustration by David Plunkert: https://www.davidplunkert.com/

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Aging & Geriatrics

Photobiomodulation, the use of light waves to change human biology, has boomed in recent years for all kinds of purposes, at medical clinics and at home. We wanted to know what the science says — and doesn’t say.