Listeria

Listeria monocytogenese

Incubation: Aerobic

Media: SBA

Source: Blood culture

• Colony morphology

  • Form: Round

  • Elevation: Raised

  • Margin: Entire

  • Color: Gray-White

• Hemolysis — Beta

• Gram Stain

  • Gram Positive

  • Microscopic Morphology: Bacilli

  • Organism Size: Medium

• Testing Pathways

  • Spore Former? No

  • Catalase: Positive

  • Motility: Positive

  • Bile Esculin Test: Positive