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Siemens\u2019 new scanner, called the Naeotom Alpha, uses detectors that count photons to measure every particle of light that comes through, leading to sharper, higher contrast images of the inner workings of your body. They are the first so-called mRNA vaccines\u2014a technology that has been in development for decades. They work by harnessing messenger RNA, the genetic bits of code that tell our cells how to make proteins.<\/p>\n<\/p>\n