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Description:Using a “dark field” microscopy technique, this photomicrograph revealed the presence of Treponema pallidum spirochetes, which are the bacterial agents responsible for causing syphilis.
“A diagnosis of syphilis is confirmed by using dark field microscopy to demonstrate T. pallidum in material from suspected lesions, or regional lymph nodes (Creighton, 1990). A positive dark field result is an almost certain diagnosis of primary, secondary, or early congenital syphilis. In primary syphilis, the dark field examination may provide a means by which to identify the etiologic agent of syphilis and diagnose the disease before antibodies to T. pallidum can be detected.”
High Resolution: Click here for hi-resolution image (18.47 MB)
Content Providers(s):CDC/ Renelle Woodall
Creation Date:1969
Photo Credit:
Links:CDC - National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Division of STD Prevention; Sexually Transmitted Diseases (STDs): Syphilis
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.