Fig. 4
From: Detection of microbial biofilms inside the lumen of ureteral stents: two case reports
Scanning electron microscopy (SEM) lumen of the J stent from male patient, colonized by coccus bacteria. a Luminal surface of a double-J stent cut longitudinally covered by the biofilm. b 500× magnification. c Aggregation of cells, 3000×. d Biofilm architecture, constituted by a net of bacterial cells connected by polysaccharides. No crystalline material was deposited in the bacterial biofilm