Scanning electron micrographs showing aggregates of Ureaplasma spp. colonies forming biofilms with self-produced matrix components at different magnifications (picture 1, 30 µm; picture 2, 30 µm; picture 3, 10 µm; picture 4, 3 µm; picture 5, 500 nm. Courtesy of Derek Fleming, PhD – Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA).