well, jon, doctors are using words like amazing and revolutionary to describe this new method. what it does is replace the need for painful tissue sampling by taking a blood sample instead then the cancerous cells are magnetically separated and kept intact so they can be annualized much more rigorously by doctors and that is the big change here. that they can keep these cells intact that will give doctors a wealth of information. as they decide how to treat patients. jon: exactly how does that help the patients? two ways. first and most obviously is the early detection of potential cancerous cells. secondly, according to our own doctor sonar area kumaritashvili that how to treat. on chemotherapy we can try it