Fig. 4From: Eye irritation testing of nanomaterials using the EpiOcularâ„¢ eye irritation test and the bovine corneal opacity and permeability assayBovine cornea treated with CeO2 NM-211 (10x, HE stain); HSI: I. A Multifocal vacuolation in the squamous and upper wing cell layers; multifocal desquamation and brown particle residues (*) on epithelial surface. Abbreviations: HE: Hematoxylin and Eosin; HSI: Histological score of irritationBack to article page