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. 2022 Jan 27;13:552. doi: 10.1038/s41467-022-28209-8

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Fig. 2 — a Solid-state ¹³C NMR spectra of gauzes. SEM images: b–d cotton gauze, and e–g USO-g-gauze at different magnifications. b–g Five spots were observed independently with similar results. Source data for a are provided as a Source Data file.