%0 Journal Article %J N Engl J Med %D 2006 %T T-cell costimulation--biology, therapeutic potential, and challenges. %A Sharpe, Arlene H %A Abbas, Abul K %K Animals %K Antibodies, Monoclonal %K Antibodies, Monoclonal, Humanized %K Antigen-Presenting Cells %K Antigens, CD28 %K Cytokines %K Humans %K Immune Tolerance %K Lymphocyte Activation %K Mice %K Models, Animal %K T-Lymphocytes %B N Engl J Med %V 355 %P 973-5 %8 2006 Sep 7 %G eng %N 10 %1 http://www.ncbi.nlm.nih.gov/pubmed/16908487?dopt=Abstract %R 10.1056/NEJMp068087