Funding for this research was provided by:
National Institutes of Health (T32GM8806)
National Science Foundation (1715911)
Saint Petersburg State University (15.61.951.2015)
National Institute on Drug Abuse (DA046171, DA039562)
Received: 27 March 2019
Accepted: 23 September 2019
First Online: 31 October 2019
Ethics approval and consent to participate
: Human fecal samples used in this study were collected under protocols approved by the institutional review board at UC San Diego (IRB protocols #131487 and #14083/#150275) and conforming to the Helsinki Declaration. Animal-derived fecal samples were collected from animals housed in accordance with approved protocols by the University of California San Diego. All animal work was approved by the Institutional Review Board at the University of California San Diego and was performed in accordance with the Institutional Animal Care and Use Committee guidelines.
: FC is an employee of Illumina, Inc. All other authors declare that they have no competing interests.