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DNA detection made easy

PhysicsWeb

This is pretty significant...

Physicists in France have shown that it is possible to detect DNA with a purely electronic technique. Ulrich Bockelmann and colleagues at the Ecole Normale Suprieure in Paris measured the intrinsic charge of DNA molecules with an array of silicon transistors, which allowed them to avoid the markers and labels used in conventional detection techniques. The team has already used its device to detect and identify a common genetic mutation in human DNA, and hopes to exploit the approach in lab-on-a-chip applications (F Pouthas et al. 2004 Appl. Phys. Lett. 84 1594).
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