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A dim view of biologic and chemical agents

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3:08pm, February 27, 2006

A new type of sensor that uses tiny optical lenses may someday detect the first signs of disease or chemical contamination in blood or other liquids.

Each microscopic lens, less than half the diameter of a red blood cell, undergoes a change in optical properties when it encounters even a small amount of specific biomolecules or chemical compounds.

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