Fig. 11. Competitive bind studies using RGD 5 and RGD NIR-AZA 2 (n = 4 pairs). (a) Plots of increasing tumour intensity over 3 h post administration for 2 (red trace) and for 5 followed by 2 (black trace). (b) Plots showing rate of increasing fluorescence for first 60 min post administration for 2 (red trace) and for 5 followed by 2 (black trace). (c) Imaging of resected tumours before and after dissection from animals treated 2 and for 5 followed by 2.