Color-coded surgery

Surgeons are taught from textbooks which conveniently color-code the types of tissues, but that's not what it looks like in real life — until now. At TEDMED Quyen Nguyen demonstrates how a molecular marker can make tumors light up in neon green, showing surgeons exactly where to cut.

Quyen Nguyen uses molecular probes that make tumors — and just the tumors — glow, as an extraordinary aid to surgeons.