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. Author manuscript; available in PMC: 2010 Apr 27.
Published in final edited form as: Magn Reson Med. 2006 Apr;55(4):836–847. doi: 10.1002/mrm.20818

FIG. 2.

FIG. 2

Amide region of the 1D 1H NMR spectra for the contrast agents over the range of pH's studied. All spectra were aquired using π/2-acquire without water suppression. (a) The 28.8-kDa G5 PAMAM dendrimer (SPD-5). Spectra are solid lines; fits as described under Materials and Methods are dashed. (b) The 708-kDa poly-l-lysine