Fig. 2.

Anti-glucosaminidase antibodies alter the growth habit of S. aureus in vitro. S. aureus grew as a uniform suspension of mostly single bacteria and doublets in Luria-Bertani broth under normal growth conditions (A). In contrast, S. aureus grown in the presence of the anti-glucosaminidase monoclonal antibody 1C11 grew as large clusters (B), as revealed by scanning electron microscopy. Micrographs C and D are representative magnified views of A and B, respectively. Note the presence of a rough outer surface on S. aureus treated with the antibody, as seen in micrograph D.