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MicroPET imaging of HCT 116-bearing model with 68Ga-NOTA-Nb109. a Representative PET images of HCT 116 xenograft obtained at different time points after injection of 68Ga-NOTA-Nb109. The tumor was denoted with a dotted line circle. b Tissue uptake of 68Ga-NOTA-Nb109 in HCT 116 xenograft quantified by ROI analysis over the imaging time-course. c Tumor-to-muscle uptake ratio for 68Ga-NOTA-Nb109 in HCT 116 xenograft over time. All data were expressed as mean ± SD (n = 3). **P < 0.01
