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. Author manuscript; available in PMC: 2014 May 13.
Published in final edited form as: N Engl J Med. 2013 Jan 17;368(3):240–245. doi: 10.1056/NEJMoa1209039

Figure 1. Morphologic Features of Spirochetes Detected in Cerebrospinal Fluid.

Figure 1

Panels A and B show the spirochetes as viewed with the use of dark-field microscopy. Panels C and D show the spirochetes as viewed with the use of bright-field microscopy, with Giemsa staining and a pH of 7.0. The bar indicates 2 µm.