Fig. 5. In vivo biodistribution and clearance of zwitterionic HPβCD based agents in healthy rats. Saline (a and b), ABZWCY-HPβCD (c and d) and AAZWCY-HPβCD (e and f) were injected intravenously into rats 5 h prior to imaging. Abbreviations: Bl, bladder; He, heart; Ki, kidney; Li, liver; Lu, lung; Sp, spleen. (g) Relative fluorescence intensity of organs in panels b, d and f.