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Laser Device Lets Biologists Immobilize and Move Cells
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Imagine some kind of futuristic ray gun that could be aimed from
a distance to immobilize just one person in a moving crowd. What if
the marksman could then move the immobilized person to another
location simply by aiming the ray gun somewhere else?
Researchers at AT&T Bell Laboratories have developed just such a
device, although it works on the microscopic scale and traps
individual cells, allowing biologists, for example, to separate one
bacterium from a swarm under the microscope.
The device-which uses a tiny, low-power, infrared laser beam-can
even be focused on a single organelle ...
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