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250 MHz images at 30°C of a two-tube phantom with 6 mm separation between tubes. Initially both tubes contained 1 mM diradical II. At time = 0, 2 mM glutathione was added to the upper tube. The time at completion of data acquisition for each image was A) 0 min, B) 26 min, C) 43 min, D) 60 min, E) 76 min, and F) 107 min.
