Fig. 9From: Supramolecular peptide nano-assemblies for cancer diagnosis and therapy: from molecular design to material synthesis and function-specific applicationsCopyright 2020, MDPI publishing. b Gd-modified peptide nanofibers for tumor MRI imaging. Reprinted with permission from Ref. [91], Copyright 2018, ElsevierPeptide nano-assemblies for MRI of cancer cells: a Gd-modified peptide hydrogel for MRI. Reprinted with permission from Ref. [90], Back to article page