Figure 1From: Biological activity and magnetic resonance imaging of superparamagnetic iron oxide nanoparticles-labeled adipose-derived stem cellsIdentification of SPIOs by Zetasizer Nano and transmission electron microscopy (TEM). (a) Diameter and PDI of SPIO measured by Zetasizer Nano. (b) Shape and bare core size of SPIOs measured with TEM.Back to article page