RT Journal Article SR Electronic T1 Checkpoint therapeutic target database (CKTTD): the first comprehensive database for checkpoint targets and their modulators in cancer immunotherapy JF Journal for ImmunoTherapy of Cancer JO J Immunother Cancer FD BMJ Publishing Group Ltd SP e001247 DO 10.1136/jitc-2020-001247 VO 8 IS 2 A1 Zhang, Yixiao A1 Yao, Yuan A1 Chen, Peng A1 Liu, Yu A1 Zhang, Hao A1 Liu, He A1 Liu­, Yu A1 Xu, Hong A1 Tian, Xibao A1 Wang, Zichu A1 Chu, Peng A1 Zhao, Dongyu A1 Liu, Hongxu A1 Zhang, Chenlei A1 Chen, Shuyuan A1 Zhao, Yuhong A1 Liu, Caigang A1 Yang, Yongliang YR 2020 UL http://jitc.bmj.com/content/8/2/e001247.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.