Scientists just made mice 'see-through' using food dye — and humans are next
A common food dye can turn the skin of living mice transparent, but we don't yet know if it'll work in humans.
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A common food dye can turn the skin of living mice transparent, but we don't yet know if it'll work in humans.
After initial experiments showed that tartrazine could turn slices of chicken breast transparent, the team turned to lab mice. They rubbed a tartrazine solution onto the rodents' scalps and then observed the animals under a microscope.
"It takes a few minutes for the transparency to appear," study lead author Zihao Ou, an assistant professor of physics at the University of Texas at Dallas, said in a statement. "It's similar to the way a facial cream or mask works: The time needed depends on how fast the molecules diffuse into the skin."
The new technique hasn't been tested in humans yet. Our skin is about four times thicker than that of mice, which would make it harder for tartrazine to be absorbed into its deepest layer. But if future studies show that the dye works in humans and it is safe, it could become a useful medical tool, the research team says.
"Looking forward, this technology could make veins more visible for the drawing of blood, make laser-based tattoo removal more straightforward, or assist in the early detection and treatment of cancers," study co-author Guosong Hong, an assistant professor of materials science and engineering at Stanford University, said in a statement.
I suppose this could be a safe and effective tool for viewing someone's insides. This could have quite a bit of potential. But it could also have interesting practical joke potential.