Fluorescence microscopic appearances of KYO1 cells 6 hours after exposure to (A) 100 μmol/L unconjugated ODN without SL-O permeabilization; (B) 20 μmol/L cholesterol conjugated ODN without SL-O permeabilization; (C) 20 μmol/L unconjugated ODN after initial cellular permeabilization with SL-O; and (D) 20 μmol/L unconjugated ODN after electroporation.