1 Division of Experimental Animal Research, Cancer Genome Center, Chiba Cancer Center Research Institute, Chiba, Japan.
2 Division of Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan.
3 Division of Cell Therapy, Chiba Cancer Center Research Institute, Chiba, Japan; Department of Tumor Microenvironment, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan.
4 Division of Developmental Genetics, Institute of Resource Development and Analysis, Kumamoto University, Chuouku, Japan.
5 Division of Experimental Animal Research, Cancer Genome Center, Chiba Cancer Center Research Institute, Chiba, Japan. Electronic address: yuichi_wakabayashi@chiba-cc.jp.