Fig. 6

Observation of S. aureus biofilms after treatment with 1×MIC of endolysin LysSYL. A CLSM images of S. aureus mono-species biofilms. The 24 h- and 72 h-old biofilms of S. aureus USA300 were treated with 1×MIC LysSYL for 1 and 5 h, respectively. 32×MIC VAN served as positive control, and PBS was used as negative control. The biofilm images were taken after Live/Dead staining. B SEM images of S. aureus biofilms. The mono-species biofilms of S. aureus USA300 (24 and 72 h) after treatment with 1×MIC LysSYL for 1 and 5 h, respectively. 32×MIC VAN served as positive control, and PBS was used as negative control. The bars represent 2 μm