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. 2014 Jun 12;53(13):6985–6994. doi: 10.1021/ic5008928

Table 4. Summary of Percent Bound Probe Gd(4b), Gd(5b), and Gd(6)20 in 4.5% (w/v) HSA as Well as Corresponding Observed Relaxivity Data in PBS and 4.5% (w/v) HSA at 37 °C.

  Gd(4b)/PBS Gd(4b)/HSA Gd(5b)/PBS Gd(5b)/HSA Gd(6)/PBS Gd(6)/HSA
% bound to HSA   88   70   70
20 MHz (mM–1 s–1) 3.9 19 3.2 9 5.6 37
60 MHz (mM–1 s–1) 3.8 14 3.0 7.8 4.8 22