What is the typical characteristics of T. pallidum associated with syphilis?

The characteristics of Treponema pallidum, the causative agent of syphilis, include a specific morphology that is important for identification under a microscope. The correct description indicates that T. pallidum typically has 8 to 24 coils and measures between 6 and 15 micrometers in length.

This description aligns with the known features of T. pallidum, which is a thin, spiral-shaped bacterium that is motile, allowing it to traverse through bodily tissues and systems efficiently. The number of coils is significant because it reflects the organism's helical structure, which is a defining characteristic of the Treponema genus. The length measurement is critical as well; it helps in differentiating Treponema pallidum from other closely related spirochetes, which may have different coil numbers and lengths.

Understanding these morphologic characteristics assists laboratory personnel in identifying T. pallidum during tests such as darkfield microscopy or serological assays, which are essential for diagnosing syphilis.