%0 Journal Article %T Ex vivo expansion of polyclonal and antigen-specific cytotoxic T lymphocytes by artificial APCs expressing ligands for the T-cell receptor, CD28 and 4-1BB %A Maus, Marcela V. %A Thomas, Anna K. %A Leonard, Debra G.B. %A Allman, David %A Addya, Kathakali %A Schlienger, Katia %A Riley, James L. %A June, Carl H. %J Nature Biotechnology %V 20 %N 2 %P 143-148 %@ 1087-0156 %D 2002-02-01 %I Nature Publishing Group US %~ DeepDyve