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Your Tears Might Save Your Life Someday
And recently, a technology named TearExo has been developed for breast cancer screening using tears collected by patients themselves. These assays are typically done with blood—but coronavirus RNA has been detected in tears as well, and antibodies to the virus may also be measured from tears. More recently, a smart contact lens has been successfully developed for continuous glucose monitoring and treatment of diabetic retinopathy. This was challenge because a mouse’s tears have less than 10 percent of the volume of human tears. Interestingly, in 2018, NASA proposed to use tear markers to monitor astronauts' health in space.
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