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Histology of the DM abnormalities in GK rat corneas. (A–B) Semi-thin sections of the corneal posterior parts, demonstrating abnormal deposits in the DM posterior part on transverse (A) as on frontal (B) sections. (C–D) Transmission electron micrographs of the DM on ultrathin sections, showing long-spacing collagen (C–D, white arrowheads), secreted by endothelial cells (C). En, endothelium; St, stroma.
