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Inhibition of cell attachment and biofilm formation with di-rhamnolipids from Lysinibacillus sp. BV152.1. Biofilms P. aeruginosa PAO1 were formed for 24 h on silicone catheter (A,B) or glass (C,D) in the presence of DMSO (0.1%) or F3 (50 μg mL-1). Biofilms were analyzed by scanning electron microscopy (SEM; A,B) or fluorescent microscopy (C,D). In (C,D) bacteria labeled with Syto9 appeared green and bacteria stained with propidium iodide (PI) are red, scale bars represent 10 μm.
