ROCHESTER, NY--(Marketwire - April 30, 2008) - CellTraffix researchers have developed a device that can extract stem cells from blood in significant quantities by mimicking the natural cell trafficking mechanisms of the body in devices utilizing its proprietary CellSelect™ technology. Now a similar type of CellSelect device has extracted CD45-positive leukocyte cells from bone marrow in far higher fractions than that extracted by current commercial products, researchers reported in the current issue of the American Journal of Hematology, currently online at: http://www3.interscience.wiley.com/journal/117955072/abstract. Analysis of CD45+ leukocyte cells is used to track the success of bone marrow transplants in patients with certain blood cancers.