Researchers from the Georgia Institute of Technology have created an acoustic sensor that can report the presence of small amounts of mesothelin as they attach to the sensor.

The sensor works on the simple fact that, when the body tries to fight off the mesothelin with antibodies, the physical properties of the antibodies change due to the attached mesothelin cells. The increased mass of the antibody cell means that sound is 'bounced back' at a different frequency. The sensor is able to pick up these minute changes in frequency.

This means that cancer sensors in the not too distant future could be built as easily and efficiently as wristwatches - and just as cheaply.

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