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The tattoo-like sensors are the newest in a growing portfolio of potential medical products derived from silk protein. But think about a tattoo that could tell you your blood oxygen levels if you are exercising, monitor your blood glucose degree all through the day or measure different blood-borne substances. Now engineers from Massachusetts’ Tufts University have developed a silk-primarily based skinny-movie disc… The disc is smaller than a US dime, it may very well be positioned beneath the skin to read oxygen levels. The novel sensor is made up of a silk-based mostly material called fibroin. Fibroin has distinctive properties that make it appropriate as an implantable materials because it doesn’t invoke an immune response. When positioned underneath the skin, the disc glows brighter or dimmer below a mild that can penetrate the skin. The depth and the duration of the glow present the completely different levels of oxygen within the blood. The duration of the glow decreases as ranges of oxygen increase. In experiments, the implanted sensor accurately tracked the oxygen ranges in real-time. This may very well be extremely useful when treating folks with conditions like COVID-19 the place oxygen ranges should be monitored constantly. "We can envision many situations during which a tattoo-like sensor under the skin can be useful," mentioned Thomas Falcucci, a graduate student in Kaplan’s lab who developed the tattoo sensor. "That’s normally in situations where somebody with a chronic situation needs to be monitored over a long period of time exterior of a traditional clinical setting.
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