High Specificity in Circulating Tumor Cell Identification Is Required for Accurate Evaluation of Programmed Death-Ligand 1. oleh Jennifer L Schehr, Zachery D Schultz, Jay W Warrick, David J Guckenberger, Hannah M Pezzi, Jamie M Sperger, Erika Heninger, Anwaar Saeed, Ticiana Leal, Kara Mattox, Anne M Traynor, Toby C Campbell, Scott M Berry, David J Beebe, Joshua M Lang