Collagenous Colitis (medium power-Trichrome)
Collagenous Colitis (medium power-Trichrome)

The Trichrome preparation stains collagen blue, highlighting the abnormal subepithelial deposition which gives this disease its name
(Description By:Martin Nadel, M.D. )
(Image Contrib. by:Martin Nadel, M.D. UCHC )