ABSTRACT The arginine catabolic mobile element (ACME) is the largest genomic region distinguishing epidemic USA300 strains of methicillin-resistant Staphylococcus aureus (MRSA) from other S. aureus strains. However. the functional relevance of ACME to infection and disease has remained unclear. https://danddcollectiblers.shop/product-category/easter-ornament-tree/