methicillin resistant Staphylococcus aureus (MRSA)

Methicillin-resistant strain of Staphylococcus aureus (MRSA) on a medium containing oxacillin, mannitol and NaCl.
Staphylococcus aureus is able to grow on media with up to 15% NaCl. Fermentation of mannitol is in this case indicated by the pink color.
From a clinical point of view it is important to determine resistance of the tested strain to oxacillin (and other related antibiotics of choice for staphylococcal infections).