Fig. 6From: Highly variable effect of sonication to dislodge biofilm-embedded Staphylococcus epidermidis directly quantified by epifluorescence microscopy: an in vitro model studyTwo positive control steel plates (A and B, not sonicated) covered with biofilm processed for SEM and photographed with increasing magnification. Plate A (× 70 magnification) shows a scratch from the forceps used for handling indicating a fragile binding to the surface. 2 of the 46 plates (C and D) were processed for SEM after sonicationBack to article page