not-yet-known not-yet-known not-yet-known unknown Hao Guo1,2,3,4, Ashley E. Stueck5, Jason B. Doppenberg3, Yun Suk Chae3,6, Alexey B. Tikhomirov1, Haishan Zeng7, Marten A. Engelse3,6, Boris L. Gala-Lopez8, Anita Mahadevan-Jansen4,9, Ian P.J. Alwayn3, Andrea K. Locke4,9,10, and Kevin C. Hewitt1,* 1Department of Physics and Atmospheric Science, Dalhousie University, 6310 Coburg Road, Halifax, NS B3H 4R2, Canada 2Department of Medical Physics, Nova Scotia Health Authority, 5820 University Avenue Halifax, NS B3H 1V7, Canada 3Transplant Center, Leiden University Medical Center, 2300 RC Leiden, The Netherlands 4Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232, USA 5Department of Pathology, Dalhousie University, 5788 University Avenue, Halifax, NS B3H 2Y9, Canada 6Department of Internal Medicine, Leiden University Medical Center, 2300 RC Leiden, Netherlands 7Imaging Unit – Integrative Oncology Department, BC Cancer Research Center, 675 West 10th Avenue, Vancouver, BC V5Z 1L3, Canada 8Department of Surgery, Dalhousie University, 6-300 Victoria Building, 1276 South Park Street, Halifax, NS B3H 2Y9, Canada 9Vanderbilt Biophotonics Center, Nashville, TN 37232, USA 10Department of Chemistry, Vanderbilt University, Nashville, TN 37232, USA * Correspondence: kevin.hewitt@dal.ca (K.C. Hewitt) Short running head: Spectroscopic Probe for Liver Steatosis