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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Spectra of proton nuclear magnetic resonance of each quarter of one TK-cryopreserved cornea after warming and washes. Peaks of water and DMSO are shown at 4.82 and 2.80 ppm, respectively. Areas of peaks are directly related with water and DMSO concentrations; ppm: particles per million.