EGFR and hepatocellular carcinoma: Similarly, Ha et al. prepared bio‐inspired ion‐doped melanin nanoparticles (iMNPs), which were simultaneously doped with Bi3+, Fe3+, and I+.[qv: 28e] After functionalization with an epidermal growth factor receptor (EGFR) antibody, iMNPs‐EGFR significantly improved the performance of MRI/CT/SPECT triple‐modal imaging of EGFR‐overexpressed orthotopic HepG2 hepatocellular carcinoma in a mouse model.