Exosomes derived from γδ-T cells synergize with radiotherapy and preserve antitumor activities against nasopharyngeal carcinoma in immunosuppressive microenvironment ======================================================================================================================================================================= * Xiwei Wang * Yanmei Zhang * Xiaofeng Mu * Chloe Ran Tu * Yuet Chung * Sai Wah Tsao * Godfrey Chi-Fung Chan * Wing-Hang Leung * Yu-lung Lau * Yinping Liu * Wenwei Tu