Spectral Characterization of Stem Cell-Derived Myelination within the Injured Adult PNS Using the Solvatochromic Dye Nile Red oleh Joey Grochmal, Wulin Teo, Hardeep Gambhir, Ranjan Kumar, Jo Anne Stratton, Raveena Dhaliwal, Craig Brideau, Jeff Biernaskie, Peter Stys, Rajiv Midha