S Fuse, JJ Obar, S Bellfy, EK Leung, W Zhang, EJ Usherwood. (2006) " CD80 and CD86 control antiviral CD8+ T-cell function and immune surveillance of murine gammaherpesvirus 68. " J Virol 80. 9159-70 PMID: 16940527 DOI: 10.1128/JVI.00422-06 | Abstract and Keywords

S Fuse, W Zhang, EJ Usherwood. (2008) " Control of memory CD8+ T cell differentiation by CD80/CD86-CD28 costimulation and restoration by IL-2 during the recall response. " J Immunol 180. 1148-57 PMID: 18178855 | Abstract and Keywords

JR Lukens, MW Cruise, MG Lassen, YS Hahn. (2008) " Blockade of PD-1/B7-H1 interaction restores effector CD8+ T cell responses in a hepatitis C virus core murine model. " J Immunol 180. 4875-84 PMID: 18354211 | Abstract and Keywords

JA Williams, JM Lumsden, X Yu, L Feigenbaum, J Zhang, SM Steinberg, RJ Hodes. (2008) " Regulation of thymic NKT cell development by the B7-CD28 costimulatory pathway. " J Immunol 181. 907-17 PMID: 18606642 | Abstract and Keywords

VV Parekh, S Lalani, S Kim, R Halder, M Azuma, H Yagita, V Kumar, L Wu, LV Kaer. (2009) " PD-1/PD-L blockade prevents anergy induction and enhances the anti-tumor activities of glycolipid-activated invariant NKT cells. " J Immunol 182. 2816-26 PMID: 19234176 DOI: 10.4049/jimmunol.0803648 | Abstract and Keywords

S Salek-Ardakani, R Arens, R Flynn, A Sette, SP Schoenberger, M Croft. (2009) " Preferential use of B7.2 and not B7.1 in priming of vaccinia virus-specific CD8 T cells. " J Immunol 182. 2909-18 PMID: 19234186 DOI: 10.4049/jimmunol.0803545 | Abstract and Keywords

H Bour-Jordan, JA Bluestone. (2009) " Regulating the regulators: costimulatory signals control the homeostasis and function of regulatory T cells. " Immunol Rev 229. 41-66 PMID: 19426214 DOI: 10.1111/j.1600-065X.2009.00775.x | Abstract and Keywords

L Garidou, S Heydari, P Truong, DG Brooks, DB McGavern. (2009) " Therapeutic memory T cells require costimulation for effective clearance of a persistent viral infection. " J Virol 83. 8905-15 PMID: 19553326 DOI: 10.1128/JVI.00027-09 | Abstract and Keywords

O Akbari, P Stock, AK Singh, V Lombardi, WL Lee, GJ Freeman, AH Sharpe, DT Umetsu, RH Dekruyff. (2010) " PD-L1 and PD-L2 modulate airway inflammation and iNKT-cell-dependent airway hyperreactivity in opposing directions. " Mucosal Immunol 3. 81-91 PMID: 19741598 DOI: 10.1038/mi.2009.112 | Abstract and Keywords