NDUFB11 and keratoconus: The KC-upregulated NDUFB11 (NADH:ubiquinone oxidoreductase subunit B11; UniPro Q9NX14) was positively stained in corneal epithelia in 3 of 4 KC specimens and was negative in normal cornea (0/2) and non-KC samples (0/4) (Fig. 7B).