Methicillin-Resistant Staphylococcus aureus Biofilms and Their Influence on Bacterial Adhesion and Cohesion

Figure 13

Images of methicillin-resistant Staphylococcus aureus biofilms stained with crystal violet and examined by light microscopy at a magnification 100x. (a) Unwashed and (b) washed cells of isolate t127/2; (c) unwashed and (d) washed cells of isolate t127/18; (e) unwashed and (f) washed cells of isolate t127/21. ((a) and (b)) Biofilms prevented crystal violet from penetrating cell walls. ((a), (b), and (c)) Cell clusters were completely enveloped by the biofilm matrix. (d) Large batches of biofilm that covered some cells. Scale bar = 20 μm.