Researchers at Stanford University have found that an aqueous solution of a common food color approved by the U.S. Food and Drug Administration, tartrazine, has the effect of reversibly making the skin, muscle, and connective tissues transparent in live rodents. Illustration of skin tissues rendered transparent following saturation by FD & C Yellow 5, including the paths of photons reflecting off un-dyed tissues. Image credit: Keyi ‘Onyx’...
