RT Journal Article SR Electronic T1 IL-6 promotes PD-L1 expression in monocytes and macrophages by decreasing protein tyrosine phosphatase receptor type O expression in human hepatocellular carcinoma JF Journal for ImmunoTherapy of Cancer JO J Immunother Cancer FD BMJ Publishing Group Ltd SP e000285 DO 10.1136/jitc-2019-000285 VO 8 IS 1 A1 Zhang, Wenjie A1 Liu, Yang A1 Yan, Zhongyi A1 Yang, Hui A1 Sun, Wei A1 Yao, Yongliang A1 Chen, Yun A1 Jiang, Runqiu YR 2020 UL http://jitc.bmj.com/content/8/1/e000285.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.