PT - JOURNAL ARTICLE ED - , TI - Correction: Mechanisms underlying low-clinical responses to PD-1/PD-L1 blocking antibodies in immunotherapy of cancer: a key role of exosomal PD-L1 AID - 10.1136/jitc-2020-001698corr2 DP - 2022 Feb 01 TA - Journal for ImmunoTherapy of Cancer PG - e001698corr2 VI - 10 IP - 2 4099 - http://jitc.bmj.com/content/10/2/e001698corr2.short 4100 - http://jitc.bmj.com/content/10/2/e001698corr2.full SO - J Immunother Cancer2022 Feb 01; 10