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. 2021 Oct 24;11(5):2101180. doi: 10.1002/adhm.202101180

Figure 5.

Figure 5

SEM micrographs of various treated filter supports. A) E. coli BL21 DE3 OMV‐derived filter coating after three coating steps. B) Filter support after three coating steps with phosphate buffered saline. C) Uncoated filter support. D) Filter support after six coating steps with OMVs from E. coli BL21 DE3.