Microsort (image) Johns Hopkins University Caption In an illustration, magnetically labeled circulating tumor cells (shown as yellow spheres) travel with red and white blood cells and platelets over an array of slanted ramps in the device. The ramps act as speed bumps, slowing the tumor cells. As the tumor cells slow, the flow carries them along the length of the ramp, causing lateral displacement. After the tumor cells traverse an array of these ramps, they have sufficiently been displaced and can be continuously isolated from other cells in the sample. Credit Martin Rietveld Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.