When the laser hits the dyed cancer cells, they light up, but not very brightly.

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Such intense lasers are better suited to power-beaming because the cells that collect the laser light can be smaller.

ECONOMIST: Monitor

When they shone a laser on the particles, the cancerous cells heated up and died, removing the tumor but leaving the surrounding cells intact.

CNN: Biography: Naomi Halas

The closest thing to LED photomodulation is a controversial procedure called nonablative laser treatment, which uses heat to burn away subsurface skin so that new cells will replace it.

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The closest thing out there to LED photomodulation is a controversial procedure called nonablative laser treatment, which uses heat to burn away sub-surface skin so that new cells will replace it.

FORBES: Magazine Article

The resulting laser-fiber-microscope combo can spot such 1-in-10 million traveling cancer cells in 30 minutes.

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Current ultraviolet light laser treatments can kill micro-organisms - but cannot be used in humans as they would also damage cells in the body.

BBC: Cell infected with HIV

Three years ago PARC scientists stumbled onto a surprising insight: Combining laser techniques with a whisk-broom bundle of fiber-optic threads enables incredibly accurate detection of traveling cancer cells, at a much faster pace than current screening allows.

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The laser moves back and forth across the width of the slide at 10 meters per second, scanning all 15 million cells in less than a minute.

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