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Princeton Scientists Bioengineer a Cellular Speedometer
Many kinds of cells can sense flow, just as our skin cells can feel the difference between a gentle breeze and a strong wind. But we depend on feeling the force involved, the push-back from the air against us. Without that push, we can't distinguish speed; when the windows are closed, our skin can't feel any difference in air force whether we are sitting in an office, a speeding car or a cruising airplane.
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