Quantification analysis showed that the PET probe uptake into both Hep3B and PLC/PRF/5 xenografts increased with time (Figure 5(c)), with the highest tumor uptakes for Hep3B and PLC/PRF/5 xenografts occurring at 24 h p.i. (8.52 ± 1.10% and 6.46 ± 0.59%, resp). This evidence concerns the gene HSPG2 and neoplasm.