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Expression of PBP2a in Staphylococcus aureus (ATCC 33591) cultures grown in the presence of various concentrations of sanguisorbigenin. The PBP2a production was reduced significantly after exposure to S. aureus strains with 6·25 µg ml−1 SGB (Lane 2), 3·13 µg ml−1 SGB (Lane 3) and 1·56 µg ml−1 SGB (Lane 4). CON, is control S. aureus strain, which without the drug (Lane 1).
