Funding for this research was provided by:
National Institute of Allergy and Infectious Diseases (044005)
National Institute of General Medical Sciences (008336)
Agricultural Research Service (5348-32000-033-00D)
WSU CVM Intramural Funds (-)
Received: 14 March 2017
Accepted: 24 September 2017
First Online: 4 October 2017
Ethics approval and consent to participate
: Animal experiments were approved by the Institutional Animal Care and Use Committee at Washington State University, USA, in accordance with institutional guidelines based on the US National Institutes of Health (NIH) Guide for the Care and Use of Laboratory Animals.
: Not applicable.
: The authors declare that they have no competing interests.
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