#Ferumoxides are composed of superparamagnetic #iron_oxide covered with a layer of #dextran with a hydrodynamic diameter is about 80-150 nm, for intravenous administration as an #MRI contrast agent.
#Silica-coated #iron_oxide nanoparticles have a strong affinity for #RNA that can be used to extract #coronavirus RNA from a solution containing a sample from the patient.
