samzenpus from the thank-you-science dept.
sciencehabit writes "Researchers have serendipitously discovered that a mixture of urea, glycerol, and soap makes membranes transparent. When they tried the mixture on a developing mouse fetus, they found that it removed all of the pigment from the cells, rendering the fetus completely transparent. The technique allowed scientists to see fluorescent neurons buried several millimeters in the brain."
The perversity of nature is nowhere better demonstrated by the fact that, when
exposed to the same atmosphere, bread becomes hard while crackers become soft.