Liu, S. et al., “99mTc-Labeling of Hydrazinonicotiniamide-Conjugated Vitronection Receptor Antagonist Useful for Imaging Tumors,” Bioconjugate Chem. 12, 624-629 (2001). Loffet, A. Q. Peptides as drugs: is there a market? In: Peptides: The Wave of the Future, Proceedings of the Se...