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Scanning electron microscophy images of sandblasted/acid-etched (SLA) surfaces (before treatment see figure 2 E and H) after 16.5 h biofilm formation before (A) and after vortexing (B). Coherent mats of microorganisms cover the surface (A). Only few bacteria remain on the surface after harvest by vortexing (B). The surface is comparable to the original surface (Figure 2 E/H)
