Lasers are the inspiration behind research investigating a new brain cancer surgery technique, called SRS microscopy. The technique has been successfully tried on more than 360 patients at the University of Michigan Medical School and Harvard University. Current surgical practice is to take sections of brain tissue that could be cancerous to a lab to be frozen, stained with dyes, and then analyzed. This process can take 30-40 minutes. In the new process, lasers fire a beam of light at the tissue, and the laser-light’s properties are changed depending on what it hits. The differing chemistry of a cancerous cell compared to normal brain tissue enables the laser beam to help surgeons find the outside edge of a tumor. The next stage is for it to be tested in full clinical trials.