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. 2023 Oct 4;622(7982):321–328. doi: 10.1038/s41586-023-06600-9

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© The Author(s) 2023

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Fig. 2 — a, Pictorial representation of the assembly space representing the formation of combinatorial object space from building blocks and physical constraints. b, Observed copy number distributions of objects at different assembly indices as an outcome of selection or no selection. c, Representation of physical pathways to construct objects with undirected and directed pathways (selected) leading to the low and high copy numbers of the observed object.