RT Journal Article SR Electronic T1 5-Fluorouracil upregulates cell surface B7-H1 (PD-L1) expression in gastrointestinal cancers JF Journal for ImmunoTherapy of Cancer JO J Immunother Cancer FD BMJ Publishing Group Ltd SP 65 DO 10.1186/s40425-016-0163-8 VO 4 IS 1 A1 Van Der Kraak, Lauren A1 Goel, Gaurav A1 Ramanan, Krishnaveni A1 Kaltenmeier, Christof A1 Zhang, Lin A1 Normolle, Daniel P. A1 Freeman, Gordon J. A1 Tang, Daolin A1 Nason, Katie S. A1 Davison, Jon M. A1 Luketich, James D. A1 Dhupar, Rajeev A1 Lotze, Michael T. YR 2016 UL http://jitc.bmj.com/content/4/1/65.abstract AB Markup server — Error Not Found The page you were trying to reach could not be found. Please check the address for the page you were trying to reach. If you believe you have reached this page in error, you may contact us with any questions.