Determining circulating endothelial cells using CellSearch system during preoperative systemic chemotherapy in breast cancer patients. Research Authors Ali AM, Ueno T, Tanaka S, Takada M, Ishiguro H, Zedan A, Toi M; Research Department Department of Medical Oncology Research Journal European J. of Cancer,,,,2011 Research Member Ashraf Zeidan Abdalla Ahmed Research Rank 1 Research Year 2011