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| CTLA4 | Cytotoxic T-lymphocyte associated protein 4. (223 aa) | ||||
| CD40 | Tumor necrosis factor receptor superfamily member 5; Receptor for TNFSF5/CD40LG (By similarity). Transduces TRAF6- and MAP3K8-mediated signals that activate ERK in macrophages and B cells, leading to induction of immunoglobulin secretion (By similarity). (280 aa) | ||||
| CD80 | CD80 molecule. (305 aa) | ||||
| CD86 | CD86 molecule. (335 aa) | ||||
| CD40LG | CD40 ligand; Cytokine that acts as a ligand to CD40/TNFRSF5. Costimulates T-cell proliferation and cytokine production. Involved in immunoglobulin class switching. (261 aa) | ||||