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Ant Pheromone May Aid Alzheimer's Patients

ng apparatus that go with them are as sensitive as the finest analytical-chemistry instruments. Cornell researchers test this super-sensing ability by measuring the electrical current passing through an ant's antenna as different chemicals, separated from a complex mixture by a gas chromatograph, are presented to the receptor at the tip of the antenna. Invariably, the antennae transmit signals only when the appropriate pheromone (or another important chemical for the ant) is detected. Ants can detect just a few parts of their pheromone in a billion parts of air. And when the electrical signal passes through their antennae, only 0.1- to 2-millivolt potential differences are created. No wonder their batteries never seem to run down.

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Contact: Roger Segelken
hrs2@cornell.edu
607-255-9736
Cornell University News Service
2-Feb-1998


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