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Treponema pallidum spirochetes depicted with darkfield microscopy

Treponema pallidum spirochetes depicted with darkfield microscopy
Using a darkfield microscopy technique, this photomicrograph revealed the presence of Treponema pallidum spirochetes, which are the bacterial agents that cause syphilis.
Courtesy of the Centers for Disease Control and Prevention/Schwartz WF.
Graphic 72322 Version 5.0