Staphylococcus aureus on Tryptic Soy Agar. Cultivation 24 hours at 37°C.
S.aureus colony description:
Basic shape of colony: circular
Elevation: convex
Margin: entire
Pigmet production: staphyloxanthin (yellow)
S. aureus is a facultatively anaerobic, Gram-positive coccus, which appears as grape-like clusters when viewed through a microscope, and has round, usually golden-yellow colonies, often with hemolysis, when grown on blood agar plates. The golden appearance is the etymological root of the bacterium's name; aureus means "golden" in Latin.