This mucin stain of the wall of the aorta demonstrates cystic medial necrosis, typical for Marfan's syndrome and causes the connective tissue weakness that explains the aortic dissection.

Results stain of interstitial collagen fibers was positive and mucin stain was negative in deproteinized bone, but stain of interstitial collagen fibers and mucin were all positive in fresh bone.

Alcian blue stain showed abundant mucin deposition in collagen bundles of dermis.