Fig. 3From: Systematic and mechanistic analysis of AuNP-induced nanotoxicity for risk assessment of nanomedicineAuNPs modified with various cationic ligands and their biological effect. a Chemical structure and characterization of five different cationic AuNPs. b FE-SEM imaging of modified AuNP-treated HeLa cells. c Effect of modified gold nanoparticles (AuNPs) on cell viability (both MTT and Trypan blue assay)Back to article page