A tiny diamond with a lattice defect peers inside a living cell and, by how quickly the protons relax, distinguishes one tumor type from another — without dyes or intervention. This quantum 'microphone' opens the door to sorting rare cells directly in the blood.
🎯 Millions of diamond defects can fit on the tip of a needle, but even a single one detects the magnetic field of just a few protons.
🎬 Magnetic reading of cellular 'passports' resembles the workings of a medical tricorder from science fiction.