Friday, May 25, 2007

2004-"Could Nanomachines Be Tomorrow's Doctors?, Nature
Excerpts: DNA computer diagnoses disease and dispenses drug.
DNA strands can sense abnormal RNA that can indicate some types of cancer.
Source: Nature
Scientists have built a tiny biological computer that might be able to diagnose and treat certain types of cancer. The device, which only works in a test-tube, is years from clinical application. But researchers hope it will be the precursor of future 'smart drugs' that roam the body, fixing disease on the spot.
Instead of silicon chips and electrical circuits, the miniscule machine is made of DNA. And rather than being controlled by electrical signals, it senses changes in its environment and responds by releasing biological molecules."


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