Fig. 2From: A proof-of-concept study on bioorthogonal-based pretargeting and signal amplify radiotheranostic strategyPreparation and evaluation of Pd@Au-PEG-TCO. A Synthesis of Pd@Au-PEG-TCO. B TEM image of Pd@Au-PEG-TCO. C The efficiency of cell uptake of Pd@Au-PEG-TCO-Cy5.5 after co-incubation with 22Rv1 cells. The PA images (D), time-intensity curves (E), and tumor/background ratios (F) of 22Rv1 tumor-bearing mice (n = 3) after injection of Pd@Au-PEG-TCOBack to article page