Fig. 1
From: Focus on T cell exhaustion: new advances in traditional Chinese medicine in infection and cancer
Inhibitory receptors associated with T cell exhaustion and related ligands. APC antigen-presenting cell, PD-1 programmed cell death protein 1, PD-L1 programmed cell death 1 ligand 1, PD-L2 programmed cell death 1 ligand 2, CTLA-4 cytotoxic T-lymphocyte-associated protein 4, TIM-3 T cell immunoglobulin domain and mucin domain protein 3, Gal-9 Galectin-9, CEACAM1 carcinoembryonic antigen-related cell adhesion molecule 1, HMGB-1 high-mobility