This undated image provided by Karl Deisseroth's lab shows a combination of photos of an intact adult mouse brain before and after the two-day CLARITY process. Scientists have made mous

 

              This undated image provided by Karl Deisseroth
This undated image provided by Karl Deisseroth's lab shows a combination of photos of an intact adult mouse brain before and after the two-day CLARITY process. Scientists have made mouse brains transparent, permitting a comprehensive and exquisitely detailed view of their inner structures, providing a major new tool for research. "You get the big picture without losing track of the details,'' said Dr. Karl Deisseroth, who led the Stanford team that reported the work online Wednesday, April 10, 2013 in the journal Nature. Some other labs are already working to apply the technique on other kinds of tissue, such as for studying breast cancer biopsies, Deisseroth said. (AP Photo/Karl Deisseroth)