Figure 3. Fluorescence Recovery After Photobleaching (FRAP) of Dextran Encapsulated Polymersomes.
(A) FITC-labeled dextran (green) was encapsulated in the core of the polymersome and PZn2 (purple) was encapsulated in the membrane. A region of the membrane (red circle) and the aqueous core (blue circle) were photobleached to assess diffusion of dextran. (B) Fluorescence recovery of FITC occurs after photobleaching (blue) in the center of the polymersome while fluorescence does not recover near the membrane (red).