In vitro and in vivo evaluation of a Technetium-99m-labeled cyclic RGD peptide as a specific marker of alpha(V)beta(3) integrin for tumor imaging

Three amino acids residues, Arg-Gly-Asp (RGD), in vitronectin and fibronectin show affinity for alpha(V)beta(3) integrins expressed in vascular endothelial cells. That tumor growth can upregulate the expression of these integrins on tumor cells for invasion and metastasis and in tissue neovasculatur...

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