How does Staphylococcus aureus appear on MSA?
How does Staphylococcus aureus appear on MSA? Staphylococcus aureus produce yellow colonies with yellow zones, whereas other Staphylococci produce small pink or red colonies with no colour change to the medium. If an organism can ferment mannitol, an acidic byproduct is formed that will cause the phenol red in the Read more…