The technology could have many applications, including assisting in the early detection and treatment of cancers. A picture of the transparent mouse abdomen is available in the article.
Common food dye lets scientists see through skin (2 minute read)
Stanford University researchers have discovered a yellow dye that transforms opaque tissue into a transparent window, allowing them to see the inner workings of living animals.
https://t.co/reQaCD1ed1
Applied to the abdomen of a mouse, the dye allowed scientists to see its liver, small intestine, bladder, and other organs down to the resolution of microns. Rinsing off the dye with water reverses the process.