Cancers that spread from one organ to another can be difficult to treat, so it is best to catch them early. Since cancer cells spread through the bloodstream, a blood test that can capture and identify circulating tumor cells could be a life saver. A new technology developed at Worcester Polytechnic Institute (WPI) does just that. What’s more, it works quickly and is inexpensive to make, paving the way for a simple and routine cancer screening tool.

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