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Intratumoral distribution of liposomes encapsulated with DiD in HepG2 xenograft tumors. (Red) DiD-encapsulated liposome. (Blue) DAPI-cell nuclei. (Green) anti-CD34-blood vessels. Scale bar = 40 μm. Reprinted with permission from Tang et al., “A stabilized retro-inverso peptide ligand of transferrin receptor for enhanced liposome-based hepatocellular carcinoma-targeted drug delivery,” Acta Biomater. 83, 379–389 (2019). Copyright 2019 Elsevier.
