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Fig. 1 | Diagnostic Pathology

Fig. 1

From: Treponema pallidum Immunohistochemistry is positive in human intestinal Spirochetosis

Fig. 1

a Hematoxylin and eosin stained section of colonic epithelium showing the characteristic histology of intestinal spirochetosis (Original magnification × 600). b The Warthin –Starry stain highlights the Brachyspira species along the apical aspect of the colonic epithelium (Original magnification × 600). c The T. pallidum immunostain robustly highlights the Brachyspira species without significant background staining (Original magnification × 600). d A tubular adenoma removed as part of cancer surveillance screening is colonized by intestinal spirochetosis (Original magnification ×1000). e The Warthin-Starry stain decorates the organisms (Original magnification ×400). f The T. pallidum immunostain is similarly positive for intestinal spirochetosis (Original magnification ×1000)

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