“Stanford University researchers discovered that applying a topical solution of tartrazine — the dye found in FD&C Yellow 5 — dissolved in water transforms opaque tissue into a transparent window into the inner workings of a living animal.

When they applied the dye to the abdomen of a mouse, the scientists could see its liver, small intestine, bladder and other organs down to the resolution of microns…

The process hasn’t been replicated in people but could point to new ways to detect and treat cancers, image back injuries and monitor diseases, along with a range of other medical applications.”

From Axios.