Scanning electron micrograph of a Staphylococcus biofilm on the inner surface of a needleless connector. A distinguishing characteristic of biofilms is the presence of extracellular polymeric substances, primarily polysaccharides, surrounding and encasing the cells. Here, these polysaccharides have been visualized by scanning electron microscopy.

Miscellaneous Techniques, Analytical, Diagnostic and Therapeutic Techniques and Equipment, Staphylococcal Infections, Gram-Positive Bacteria

Picture & text from CDC/PHIL. For more information see Staph Infection Pictures from CDC