<unk>  appears as Gram-negative rods after Gram staining under bright-field microscopy with 1000 times magnification.<unk>  is a Gram-negative, facultatively anaerobic, rod-shaped bacterium. It shows swarming motility and urease activity.<unk>  causes 90% of all<unk>  infections in humans. It is widely distributed in soil and water.<unk>  can migrate across the surface of solid media or devices using a type of cooperative group motility called swarming.<unk>  is most frequently associated with infections of the urinary tract, especially in complicated or catheter-associated urinary tract infections.
Proteus mirabilis
Escherichia coli
Citrobacter koseri
Enterobacter cloacae
Klebsiella oxytoca
Enteroinvasive Escherichia coli
Enteroaggregative Escherichia coli
Pseudomonas aeruginosa