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. 2020 Oct 23;49(D1):D677–D686. doi: 10.1093/nar/gkaa917

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© The Author(s) 2020. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — The development of DEG. The number of essential-gene records for (A) prokaryotes and (B) eukaryotes in DEG with different versions. The stacked bars show the number of records according to the experimental methods.