Figure 2. Effect of PEGylation for tail vein injected SWNT.
a, (AAAT)7-SWNT remains within the tail following injection (50 mg L−1) into left then right tail veins, cross-sectional view of tail shows that the (AAAT)7-SWNT is localized within the veins. b, Gel electrophoresis data showing the difference in electrophoretic mobility of (AAAT)7-SWNT (red) when mixed with FBS as opposed to PEG-(AAAT)7-SWNT (blue) which was not altered by the addition of FBS. c, Mouse tail following injection (50 mg L−1) of PEG-(AAAT)7-SWNT into the left tail vein, cross-sectional view shows clearance of SWNT from the vessel. (n = 3, scale bars 2 mm)