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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Biomaterials. 2010 Mar 25;31(18):5007–5021. doi: 10.1016/j.biomaterials.2010.02.075

Fig. 2.

Fig. 2

HPLC chromatograms for G4-PAMAM-O-GABA-NH2 (6) (UV channel), G4-PAMAM-O-GABA-NH-FITC (1) (Fluorescent channel) and G4-PAMAM-O-GABA-NH-Alexa 488 (2) (Fluorescent channel). The retention time of G4-PAMAM-O-GABA-NH2 is 16.2 min and the FITC and Alexa tagged G4-PAMAM-O-GABA-NH2 show a peak appearing at 17.5 and 15.5 min respectively.