Figure 3.

The control group, which lacks peptide treatment, was cultured for 4 h, as shown in (a,c). (b,d) were SEM micrographs of S. gordonii cells treated with peptide at 1× MICs for 4 h. As indicated by the white arrows, significant cell wall distortion, corrugation, and damage were observed on the surface of S. gordonii cells after treatment with the peptide compared with the smooth surface of the control. The experiments were all repeated at least 3 times.