Funding for this research was provided by:
Anglia Ruskin University (na)
Murray Edwards College, UK (na)
Virginia Museum of Natural History, USA (na)
Received: 10 January 2019
Accepted: 30 June 2019
First Online: 11 July 2019
: In the present study, our experimental procedures and sample collection complied with the current laws on animal welfare and research in the UK and USA and were specifically approved both the Research Ethics Committee of Anglia Ruskin University and the Research Ethics Committee of the Virginia Museum of Natural History. The research committee of both institutions were aware that samples were used from previous studies and granted approval accordingly. All aspects of this study conform to guidelines from the Research Ethics Committee of Anglia Ruskin University. Permission was granted to import squirrel tissue to the United Kingdom from the United States of America by the Department for Environment, Food and Rural Affairs: authorisation number IMP/GEN/2014/06.
: Not applicable.
: The authors declare that they have no competing interests.