Funding for this research was provided by:
Japan Society for the Promotion of Science (15K06911, 23591398, 15K10031)
Received: 31 October 2018
Accepted: 17 May 2019
First Online: 29 May 2019
Ethics approval and consent to participate
: Approval for the study was obtained from the Ethics Committee and Institutional Review Board of the coordinating center (Kagoshima University, 2008, approval number 08–050). All methods were performed in accordance with the principles of the Declaration of Helsinki. All the cell lines, except MT-2, were established from patients in our laboratory [CitationRef removed]. MT-2 was purchased from Japanese Cancer Research Resources Bank (Osaka, Japan; catalogue number: JCRB1210). Written informed consent was obtained from healthy subjects to participate in this study. A copy of the written consent is available for review upon request.
: Not applicable.
: The authors declare that they have no competing interests.