1 Clinical Scale Cell-Surface Marker Independent, Acoustic Microfluidic Enrichment of Tumor Cells from Blood Cecilia Magnusson 1 †, Per Augustsson 2 †, Andreas Lenshof 2 , Yvonne Ceder 3 , Thomas Laurell 2,4 and Hans Lilja 1,5,6 * †These authors contributed equally to the current study. Affiliations 1 Department of Translational Medicine, Lund University, Malmö, Sweden 2 Department of Biomedical Engineering, Lund University, Sweden 3 Department of Laboratory Medicine, Lund University, Sweden 4 Department of Biomedical Engineering, Dongguk University, Seoul, South Korea 5 Departments of Laboratory Medicine, Surgery (Urology Service) and Medicine (Genitourinary Oncology Service), Memorial Sloan Kettering Cancer Center, New York, NY 10065, U.S.A. 6 Nuffield Department of Surgical Sciences, University of Oxford, Oxford, OX3 7LD, U.K. *Corresponding Author: Hans Lilja Department of Laboratory Medicine Memorial Sloan Kettering Cancer Center 1275 York Avenue, New York, NY 10065 Tel: +1-212-639-6982 Fax: +1-646-422-2379 Email: liljah@mskcc.org