(A) The decay of cell-associated ODN fluorescence after treatment of KYO1 cells with ODN conjugates or loading with SL-O. Symbols are the same as for Fig 2, except that the 5′CH-2B494AS-3′F and 5′VITE-2B494AS-3′F concentrations are 20 μmol/L. (B) Comparison of the decay of cell-associated ODN fluorescence in SL-O permeabilized and electroporated KYO1 cells. Details of the experimental conditions are given in the text. (▴) 20 μmol/L 5′F-2B494AS with SL-O; (+) 20 μmol/L 5′F-3B494AS with SL-O; (⧫) 20 μmol/L 5′F-2B494AS with electroporation; (▪) 20 μmol/L 5′F-3B494AS with electroporation.