Towards the development of a non-bioptic diagnostic technique for eosinophilic esophagitis using Raman spectroscopy Hemanth Noothalapati 1 , Suguru Uemura 2 , Naoki Ohshima 1, 3 , Yoshikazu Kinoshita 1, 3 , Masahiro Ando 4 , Hiro-o Hamaguchi 4, 5 , and Tatsuyuki Yamamoto 1, 2 * 1 Raman Center for Medical and Biological Applications, Shimane University, 1060 Nishikawatsu-cho, 690-8504, Matsue, Japan 2 Faculty of Life and Environmental Science, Shimane University, 1060 Nishikawatsu-cho, 690-8504, Matsue, Japan 3 Faculty of Medicine, Shimane University, 89-1 Enya-cho, 693-8501, Izumo, Japan 4 Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, 513 Tsurumaki-cho, Waseda, Shinjuku, 162-0041, Tokyo, Japan 5 Institute of Molecular Science and Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, 30010, Hsinchu, Taiwan Tel+Fax: +81-(852)-32-6551 E-mail: tyamamot@life.shimane-u.ac.jp ( Received ) keywords: Raman spectroscopy; eosinophilic esophagitis; non-bioptic diagnosis; eosinophil peroxidase