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. 2020 Mar 11;11(4):473–478. doi: 10.1021/acsmedchemlett.9b00595

Figure 4.

Figure 4

SEM images of established MRSA OU6 biofilms on PC membranes. Very thick coat of the EPS matrix is present in the untreated control biofilm on the PC membrane which also blocks the bacterial cells from being captured in the microscope (A). BPEI-treated sample has a much clearer view as the EPS removed and even the membrane surface is exposed as many nanosize pores are seen at the bottom (B). Scale bars in (A) and (B) = 1 μm.