Figure 1From: Clinicopathologic study of intestinal spirochetosis in Japan with special reference to human immunodeficiency virus infection status and species types: analysis of 5265 consecutive colorectal biopsiesMicroscopic appearance of intestinal spirochetosis. (H&E staining) ABrachyspira aalborgi. Basophilic fringes measuring 2 to 6 micrometers in length were observed on the surface epithelium. BBrachyspira pilosicoli. Basophilic fringes measuring 4 to 20 micrometers in length were observed on the surface epithelium.Back to article page