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. 2020 Dec 3;10:21090. doi: 10.1038/s41598-020-77868-4

Figure 3.

Figure 3

Field-emission scanning electron microscopy analysis of biofilm eradication on stainless steel coupon. Biofilms formed by E. coli O157:H7 were exposed to 100 µg/mL proteinase K (C,D) and, 1 mg/mL R. sativus var. longipinnatus extract (E,F) alone or the combination thereof (G,H) and compared with a positive control (A,B). Negative controls (I,J) are an untreated stainless steel coupon. The magnification of A,C,E,G and, I is 5000×, and B,D,F,H and, J is 10,000x.