fig1
From: Drug resistance in cancer immunotherapy: new strategies to improve checkpoint inhibitor therapies
Figure 1. The immune synapse and response to tumor cells. APC: antigen presenting-cell; PD-L1: programmed death ligand-1; PD-1: programmed death-1; CTLA-4: cytotoxic T-lymphocyte antigen-4; TCR: T cell receptor; MHC: major histocompatibily complex; B7.1/2: ligand B7-1 and 2; CD28: cluster of differentiation-28
