@article {542486,
	title = {T-cell costimulation--biology, therapeutic potential, and challenges.},
	journal = {N Engl J Med},
	volume = {355},
	number = {10},
	year = {2006},
	month = {2006 Sep 7},
	pages = {973-5},
	keywords = {Animals, Antibodies, Monoclonal, Antibodies, Monoclonal, Humanized, Antigen-Presenting Cells, Antigens, CD28, Cytokines, Humans, Immune Tolerance, Lymphocyte Activation, Mice, Models, Animal, T-Lymphocytes},
	issn = {1533-4406},
	doi = {10.1056/NEJMp068087},
	author = {Sharpe, Arlene H and Abbas, Abul K}
}
