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Morphological changes in Proteus mirabilis crystalline biofilm on indole impregnated silicone Foley catheter. Microscopic visualization of biofilm formation by P. mirabilis ATCC12453 on SFC segments using a scanning electron microscope (SEM). Biofilm formation on the catheter treated by impregnation at 0.5X MIC (0.6 mg/mL) of the indole extract (Zch127) was compared to control DMSO treated catheter. Visualization was done at magnifications of (A) 10,000 X and (B) 20,000 X.
