Images and videos
Images
Ulcerative colitis
Colonic biopsy specimen showing severe mucosal inflammation, formation of crypt abscess, mild glandular atrophy, and distortion, suggesting an active phase of ulcerative colitis; hematoxylin/eosin staining, ×400 magnification
From Iannone F, Scioscia C, Musio A, et al Leucocytoclastic vasculitis as onset symptom of ulcerative colitis Ann Rheum Dis 2003 Aug;62(8):785-6; used with permission
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Videos
Venepuncture and phlebotomy: animated demonstrationHow to take a venous blood sample from the antecubital fossa using a vacuum needle.
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