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SEM analysis of biofilms. The 24-h biofilms of S. mutans strains UA159 (panels 1 and 3) and TW90 (panels 2 and 4) were grown on HA disks that were deposited in 24-well cell culture clusters in semidefined BM medium with glucose (panels 1 and 2) or sucrose (panels 3 and 4) as the carbohydrate source. Magnification in all images, ×1,000.
