1. BK virus colonic ulcerations
Gordon Y Kim, Joyce Peji, Gerard Nuovo, Fred Thomas 
Clinical Gastroenterology and Hepatology 
Volume 2, Issue 2, Pages (February 2004)
DOI: /S (03)

2. Figure 1
Endoscopic view of a 1-cm ulcer located at the ileocecal valve.
Clinical Gastroenterology and Hepatology 2004 2, DOI: ( /S (03) )

3. Figure 2
(A) Intranuclear viral inclusions (arrow). The nuclei are enlarged and hyperchromatic. H&E stain; original magnification 1000×. (B) In situ hybridization; original magnification 1000×. The staining (brown) confirms the presence of the BK virus in the colonic mucosa via in situ hybridization.
Clinical Gastroenterology and Hepatology 2004 2, DOI: ( /S (03) )