Developing a new cancer immunotherapeutic preparation using cell membrane vesicles A research group consisting of Professor Kagotani Yuki and dedicated lecturer Ito Yusuke, Department of Cancer Immunology, Institute of Advanced Medical Sciences, Keio University, and Associate Professor Ota Seiichi, Graduate School of Tokyo, and Chitose of the Aichi Cancer Center, have successfully developed nanoparticle-sized cell membrane vesicles that activate immune cells and attack cancer as a new treatment for cancer.