Figure 2
Scanning electron micrographs of subgingival dental plaque demonstrating a range of microorganisms but with the predominate species having a swollen rod morphology that could potentially be members of TM7 phylum (t). A Spirochaetal microorganism, probably Treponema sp., can also be seen (s). Bacterial septa can be clearly seen in the suspected TM7 microorganisms. Extensive membrane-associated vesicles can be seen associated with some septa (solid arrow), whereas other septa are totally devoid of vesicles (broken arrow). (a) ×35,000 magnification; (b) ×80,000 magnification.
