Figure 5. Immunofluorescence at 1 year. A normal corneal epithelium presents K3/12 (A) expression but no expression of K19 (B). Corneas of treated eyes also express K3/12 (C) but not K19 (D). In corneas of control 2 K3 is slightly expressed (E) and K19 is expressed in a patchy and erratic pattern (F). Table G discloses immunofluorescence results for central and peripheral corneas of normal, treated, and control eyes. Treated eyes show a similar expression than a normal eye, with strong K3/12 expression along the entire cornea, no expression of K19 in central cornea and a slight mark for K19 in the periphery. Both control groups express K19 along the central and peripheral cornea. Cultured epithelial sheet grafts show basal expression of K19 and suprabasal-layer expression of K3/12.