An immune evasion mechanism with IgG4 playing an essential role in cancer and implication for immunotherapy =========================================================================================================== * Hui Wang * Qian Xu * Chanyuan Zhao * Ziqi Zhu * Xiaoqing Zhu * Junjie Zhou * Shuming Zhang * Tiqun Yang * Biying Zhang * Jun Li * Meiling Yan * Renming Liu * Changchun Ma * Yan Quan * Yongqu Zhang * Weifeng Zhang * Yiqun Geng * Chuangzhen Chen * Shaobin Chen * Ditian Liu * Yuping Chen * Dongping Tian * Min Su * Xueling Chen * Jiang Gu