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. Author manuscript; available in PMC: 2021 Jul 30.
Published in final edited form as: Nat Rev Microbiol. 2019 Sep 23;17(12):725–741. doi: 10.1038/s41579-019-0255-9

Figure 1.

Figure 1.

The design-build-test-learn cycle for microbiome engineering. The figure presents key aspects and approaches of each phase of the design-build-test-learn (DBTL) cycle. The cycle starts with a defined engineering objective that determines the design and produces an engineered microbiome that performs the desired function(s).