Visualizing long-range connections between cells and fine-grained cellular structures can be possible with the ability to see through organs and other parts of the body.

"Although the idea of tissue clearing has been around for a century, to our knowledge, this is the first study to perform whole-body clearing, as opposed to first extracting and then clearing organs outside the adult body," says senior study author Viviana Gradinaru of the California Institute of Technology. "Our methodology has the potential to accelerate any scientific endeavor that would benefit from whole-organism mapping, including the study of how peripheral nerves and organs can profoundly affect cognition and mental processing, and vice versa."
Source-Eurekalert