Received: 31 December 2020
Accepted: 11 March 2021
First Online: 20 April 2021
: All animal procedures and the protocol for these experiments, including genomic recombination, were reviewed and approved by the Institute of Experimental Animal Sciences of the Faculty of Medicine at Osaka University (No. 26-080-038).
: The authors declare that they have no conflicts of interest.
: The present study does not include human subjects. Therefore, consent to participate was waived.
: The present study does not include human subjects. Therefore, consent for publication was waived.