Fig. 2From: Effects of iron oxide nanoparticles as T2-MRI contrast agents on reproductive system in male miceCharacterization of IONPs. a TEM image and b size distribution measured by DLS of IONPs dispersed in aqueous solution. c XRD patterns of IONPs. d The M-H loop of IONPs at 300 K. Inset showed the response of hydrophilic IONPs to a magnet. e T2-weighted image and f transverse relaxivity (r2) of IONPs at 3.0 T (R2 = 0.999)Back to article page