Figure 2.
Tumor to kidney uptake ratios of 99mTc-RGD-(Arg11)CCMSH, 99mTc-RGD-Gly-(Arg11)CCMSH, 99mTc-RGD-Lys-(Arg11)CCMSH and 99mTc-RGD-Arg-(Arg11)CCMSH at 2, 4 and 24 h post-injection. The tumor to kidney uptake ratios of 99mTc-RGD-Lys-(Arg11)CCMSH and 99mTc-RGD-Arg-(Arg11)CCMSH were calculated based on our previous reports 22,23 for comparison.