Fig. 2

A cross-sectional histologic specimen of the conjunctiva after tumor excision in the left eye. The Alcian blue staining (A) showed an intact epithelium (A1) and a subepithelial accentuated chronic inflammation with deposits of mucin (A2) and eosinophilic hyaline material (A3). In the Congo-red staining (B), the cross section of the conjunctiva showed a negative staining, no apple green birefringence in polarized light (B1) and only red-stained erythrocytes (B2)