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Comparison of biofilm structures formed by strains 536 (A) and MG1655 (B). The phenotypic analysis of the structure of strains 536 and MG1655 and their derivatives was performed in microfermentors with bacteria grown for 48 h at 37°C in M63B1 glucose medium. Thermanox slides were stuck on Pyrex spatulas and removed after biofilm growth for scanning electron microscopy analysis. The images are representative images.
