An in vitro platform for study of the human gut microbiome under an oxygen gradient.

"Declarations Competing interestsAll authors declare no competing financial or non-financial interests. Distribution statementA. Approved for public release. Distribution is unlimited. © 2022 Massachusetts Institute of Technology. Delivered to the U.S. Government with Unlimited Rights, as defined in DFARS Part 252.227-7013 or 7014 (Feb 2014). Notwithstanding any copyright notice, U.S. Government rights in this work are defined by DFARS 252.227-7013 or DFARS 252.227-7014 as detailed above. Use of this work other than as specifically authorized by the U.S. Government may violate any copyrights that exist in this work. Competing interests All authors declare no competing financial or non-financial interests."

"Funding Open Access funding provided by the MIT Libraries. The authors wish to acknowledge the following sources of financial support. This material is based upon work supported by the Under Secretary of Defense for Research and Engineering under Air Force Contract No. FA8702-15-D-0001. Any opinions, findings, conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Under Secretary of Defense for Research and Engineering."