The Role of Exosomal microRNA in Cancer Drug Resistance oleh Qiao-ru Guo, Qiao-ru Guo, Hui Wang, Ying-da Yan, Yun Liu, Chao-yue Su, Hu-biao Chen, Yan-yan Yan, Rameshwar Adhikari, Qiang Wu, Qiang Wu, Jian-ye Zhang, Jian-ye Zhang