Qualitative gene expression analysis. Lanes are represented as follows: M, Marker; 1, KTCN cornea; 2, non-KTN cornea; 3, lymphoblastoid cell line derived from unaffected (14–02) member of KTCN-014 family; 4, lymphoblastoid cell line derived from affected (14–09) member of KTCN-014 family; 5, −RT; 6, negative control.