For those like me that don't what it is...Here's a liitle excert:
CLEVELAND CLINIC RECOGNIZES CIRCULATING TUMOR CELL TECHNOLOGY AS TOP MEDICAL INNOVATION FOR 2009
The CellSearch® System is the first diagnostic test to automate the capture and detection of tumor cells that have detached from solid tumors and entered the patient’s blood. With the CellSearch® System, it is possible to reproducibly find a single circulating tumor cell among approximately 40 billion blood cells in a 7.5 mL blood sample.
The ability to identify a single cancer cell through this innovative technology provides physicians with an important measure of a patient’s disease prognosis to help them make more informed patient care decisions. Dr. Mark Graham, a practicing oncologist from Waverly Hematology Oncology in Cary, North Carolina, has used CellSearch® for the past two years to regularly monitor the prognosis of his population of metastatic breast cancer patients.