Funding for this research was provided by:
National Science Foundation (1069283)
Received: 9 February 2018
Accepted: 19 December 2018
First Online: 25 January 2019
Ethics approval and consent to participate
: This project used tissues from animals euthanized for reasons unrelated to this project and approved by Iowa State University’s Institutional Animal Care and Use Committee. This is in accordance with ethically sourced guidelines previously published. (Martinson, S. and Jukes N. Ethically sourced animal cadavers and tissue: Considerations for education and training. Proc. 6th World Congress on Alternatives & Animal Use in the Life Sciences. Alternatives to Animal Testing and Experimentation 14: 265–268).
: Not applicable.
: The authors declare that they have no competing interests.
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