Synergistic effects between aminoethyl-chitosans and β-lactams against methicillin-resistant Staphylococcus aureus (MRSA)

Two kinds of aminoethyl-chtiosans (AEC), AEC90 and AEC50, having degrees of deacetylation of 90% and 50%, exhibited strong synergistic effects in combination with β-lactams against MRSA.