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T1-weighted MR image of NIH/3T3 cells incubated with 20 μM and 5.0 μM [Gd(III) concentrations] DNA-Gd(III)@AuNP and DOTA-Gd(III) for 24 hours at 14.1 T (600 MHz) and 25 °C. (TE = 10.2 ms, TR = 750 ms, FOV = 10 × 10 mm2, slice thickness = 1.0 mm).
