Figure 6. Visualization of drug distribution after transfer.

Representative photographic (A–D) or fluorescence microscopic (E) images of gel films after 1 min expansion of rhodamine B-coated (A, B), fluorescein sodium-coated (C, D) or triamterene-coated (E) balloons into the film without (A, C) prior incubation or after advancement through the model coronary artery pathway including perfusion with phosphate buffered saline pH 7.4 for 1 min (B, D, E), braces and respective numbers indicating the number of coils of the gel film (first coil in direct contact with balloon).