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. 2015 Jun 5;13(6):3581–3605. doi: 10.3390/md13063581

Figure 2.

Figure 2

LIVE/DEAD staining and CLSM (60×) of (left) untreated 72 h S. aureus (MRSA) ATCC 33593 biofilms and (right) S. aureus ATCC 33593 72 h biofilms following 24 h challenge with H. siliquosa extract E3 (1.25 mg/mL). Treated MRSA ATCC 33593 biofilms appeared mostly dead (red) confirming the antimicrobial activity seen during screening. The X–Y projections of the treated biofilm suggest a good penetration of the antimicrobial compounds within the exopolymeric matrix with a consistent antimicrobial activity throughout all layers of the biofilm.