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In vivo nanoparticle PET-CT 7 days after transplantation. (A) Heterotopic grafts in the recipient's abdomen. The allograft (Allo) showed higher PET signal compared to the isograft (Iso). (B) Allografts showed significantly higher standard uptake value (SUV) and (C) target-to-backgound ratios (TBR) than isograft controls. Data are mean ± SEM, *p<0.05, **p<0.01.
