Staphylococcus aureus subsp. aureus

<i>Staphylococcus aureus</i> subsp. <i>aureus</i>

Fig. 20:4. Closeup of colonies of Staphylococcus aureus subsp. aureus, strain SLV 350, cultivated aerobically on bovine blood agar during 24 h at 37°C. Note the doubble hemolysis, which is visible with lighting from below. The black slanted arrow shows the inner clear (complete) hemolysis zone (caused by an α-hemolysin) and the blue horisontal arrow shows the outer broad and diffuse (partial) hemolysis zone (caused by a β-hemolysin). The total length of the scale bar is equivalent to 5 mm. Date: 2011-01-25.

 

Credit: Karl-Erik Johansson (BVF, SLU & SVA) & Lise-Lotte Fernström (BVF, SLU).

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