Fig. 2From: Double valve replacement in a patient with Maroteaux – Lamy syndrome as an ultimate team challengeMitral valve histological examination. a. Valve stromal infiltration from clear cells, polysaccharides and mucopolysaccharides, b. Alcian Blue 2,5 positive in stromal glycosaminoglycans, c. CD68 (+) in clear cells, d. Actin (+) in myofibroblasts and clear cellsBack to article page