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Listeria monocytogenes
Listeria monocytogenes Listeria monocytogenes
Pinpoint to small, semi-transparent colonies.
The same Blood Agar plate examined with transmitted light. The colonies are surrounded by a narrow haemolytic zone. This zone is more easily seen if the culture is grown on thin Blood Agar plates.
General characteristics: Gram-positive rods. Catalase-positive. Attacks sugars fermentatively. Motile with characteristic slow, tumbling and rotary movements.
© Department of Veterinary Disease Biology 2011
Faculty of Health and Medical Sciences - University of Copenhagen