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. Author manuscript; available in PMC: 2014 Oct 16.
Published in final edited form as: J Mater Chem B. 2013;1(8):1142–1149. doi: 10.1039/C2TB00275B

Table 2.

NMR relaxivities of MBICs and MBIClusters at 1.4T, 37 °C

Sample Intensity average diameter (nm) r1 (s−1 mM Fe−1) r2 (s−1 mM Fe−1)
MBICs 55±2 18 68
50±2 14 93
MBIClusters 119±6 30 194
105±2 40 255
143±5 34 410
139±4 69 444
181±2 43 604
174±2 75 534