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. 2022 Dec 1;15(23):8561. doi: 10.3390/ma15238561

Figure 4.

Figure 4

TUBS-M (a) and TUBS-T (b) particles of the size fractions 45–90 µm and 25–45 µm, respectively; surface structure of a single particle of the size fraction <25 µm for TUBS-M (c) and 25–45 µm for TUBS-T (d).