Figure 4From: Superparamagnetic core/shell GoldMag nanoparticles: size-, concentration- and time-dependent cellular nanotoxicity on human umbilical vein endothelial cells and the suitable conditions for magnetic resonance imaging HUVEC apoptosis. (A) and (B) HUVECs labeled with 30 nm GMNPs; (C) and (D) for HUVECs labeled with 50 nm GMNPs. * P < 0.05, compared with the control group.Back to article page