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. Author manuscript; available in PMC: 2012 Mar 7.
Published in final edited form as: Phys Med Biol. 2011 Feb 1;56(5):N85–N92. doi: 10.1088/0031-9155/56/5/N01

Figure 2.

Figure 2

Polarization buildup curves of 100 uL samples containing 0.8 M [1-13C]pyruvate with 15 mM trityl in a) [13C]DMSO:water b) naturally abundant (NA) DMSO:water glassing matrices. The samples were irradiated at the positive and negative polarization peaks at 3.35 T and 1.4 K.