| 摘要 |
A biologically active peptide selected from growth factors, peptide hormones, interferons and cytokines and analogues and derivatives thereof, and bearing at least one chelating group linked to an amino group of said peptide, the chelating group being capable of complexing a detectable element and such amino group having no significant binding affinity to target receptors, are complexed with a detectable element and are useful as a pharmaceutical, e.g. a radiopharmaceutical for in vivo imaging of target tissues or for therapy.
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