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Proteus mirabilis
Proteus mirabilis
Proteus mirabilis does not form distinctive colonies on Blood Agar, instead the bacteria swarm across the surface of the agar. Discontinuous swarming produces concentric circles around the point of inoculation. Continuous swarming produces a uniform film. There is no alteration of the blood.

General characteristics: Gram-negative rods. Catalase-positive and oxidase-negative. Attacks sugars fermentatively and gas is produced. Motile.
© Department of Veterinary Disease Biology 2011
Faculty of Health and Medical Sciences - University of Copenhagen