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Is that bacteria dead yet?
Date:6/30/2013

a millimeter, determine the presence or absence of the bacteria.

To measure these vibrations, the researchers project a laser onto the lever. The light is then reflected back and the signal is converted into an electrical current to be interpreted by the clinician or researcher. When the electrical current is a flat line, one knows that the bacteria are all dead; it is as easy to read as an electrocardiogram.

A promising method for cancer treatment

The researchers have miniaturized the toolit is currently the size of a matchbox. "By joining our tool with a piezoelectric device instead of a laser, we could further reduce its size to the size of a microchip," says Giovanni Dietler. They could then be combined together to test a series of antibiotics on one strain in only a couple of minutes.

The researchers are currently evaluating the tool's potential in other fields, notably oncology. They are looking into measuring the metabolism of tumor cells that have been exposed to cancer treatment to evaluate the efficiency of the treatment. "If our method also works in this field, we really have a precious tool on our hands that can allow us to develop new treatments and also test both quickly and simply how the patient is reacting to the cancer treatment," says Sandor Kasas.


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Contact: Lionel Pousaz
lionel.pousaz@epfl.ch
41-795-597-161
Ecole Polytechnique Fdrale de Lausanne
Source:Eurekalert

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