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. 2019 Oct 28;9:15407. doi: 10.1038/s41598-019-51851-0

Figure 3.

Figure 3

SEM images of (a) PVAc thin-film (NF 0), (b) PVAc nanofiber (NF 1), (c) NF 2, (d) NF 3 (inset figure is the magnified view of the structures).