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2D axial Spin echo images of mice receiving PGA-(Gd-DO3A) (0.045 mmol-Gd/kg, A), PGA-(Gd-DO3A)-Mce6 (B, 6 mg Mce6/kg), and PEG-PGA-(Gd-DO3A)-Mce6 (6 mg Mce6/kg, C) before (i) and at 2min (ii), 30 min (iii), and 18 hours (iv) post-injection. Arrows indicate tumor.
