TNFSF10 and neoplasm: In fact, biodistribution analysis at 4 h postinjection demonstrated that tumor uptake of RGR-TRAIL was 3 times greater than that of TRAIL, whereas the accumulation of RGR-TRAIL in other normal organs/tissues was similar to that of TRAIL (Figure 3(B)), indicating that fusion to RGR peptide significantly increased the tumor-homing ability of TRAIL.