%0 Journal Article %T The Roles of CD4+ T Cells in Tumor Immunity %A Yo-Ping Lai %A Chung-Jiuan Jeng %A Shu-Ching Chen %J ISRN Immunology %D 2011 %I Hindawi Publishing Corporation %R 10.5402/2011/497397 %U http://dx.doi.org/10.5402/2011/497397