Cannons JL, et al. 4-1BB ligand induces cell division, sustains survival, and enhances effector function of CD4 and CD8 T cells with similar efficacy. J. Immunol. 2001; 167:1313–1324. [PubMed: 11466348]
Wilcox RA, Tamada K, Strome SE, Chen L. Signaling through NK cell-associated CD137 promotes both helper function for CD8+ cytolytic T cells and responsiveness to IL-2 but not cytolytic activity. J. Immunol. 2002; 169:4230–4236. [PubMed: 12370353]
Wilcox RA, et al. Cutting edge: expression of functional CD137 receptor by dendritic cells. J. Immunol. 2002; 168:4262–4267. [PubMed: 11970964]