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Common food dye found to make skin and muscle temporarily transparent
Researchers say procedure not yet tested on people could eventually be used to help locate injuries or tumours
Applying the dye to the belly of a mouse made its liver, intestines and bladder clearly visible through the abdominal skin, while smearing it on the rodent’s scalp allowed scientists to see blood vessels in the animal’s brain. Treated skin regained its normal colour when the dye was washed off, according to researchers at Stanford University, who believe the procedure opens up a host of applications in humans, from locating injuries and finding veins for drawing blood to monitoring digestive disorders and spotting tumours. Photograph: handoutIn a series of experiments described in Science, the researchers show how a fresh chicken breast became transparent to red light minutes after being immersed in tartrazine solution, a yellow food dye used in US Doritos, SunnyD drink and other products.
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