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Representative PET-CT images of 64Cu-DOTA-GU40C4 and 64Cu-DOTA-Pctrl in PC3 tumor-bearing mice at 1, 4, and 20 h p.i. For simplicity, one-side tumors are focused for presentation because the left/right tumors were not in the same plane. Tumors are indicated by yellow arrows; salivary glands are indicated by red arrows.
