Helical conformation of Treponema pallidum (Nichols strain), Treponema paraluis-cuniculi, Treponema denticola, Borrelia turicatae, and unidentified oral spirochetes.
Borrelia turicatae (mouse virulent) and Treponema denticola, a small oral treponeme, formed right-handed helices as determined by scanning electron microscopy. Treponema pallidum (Nichols strain), Treponema paraluis-cuniculi, and two unidentified oral spirochetes displayed left-handed helices.
D001898:Borrelia / Q000166:cytology*; D008855:Microscopy, Electron, Scanning; D010518:Periodontitis / Q000382:microbiology; D013144:Spirochaetales / Q000166:cytology*; D014208:Treponema / Q000166:cytology*; D014210:Treponema pallidum / Q000166:cytology*