Magnetite SNP were synthesized, then encapsulated in either silica or poly (D,L,-Lactide-co-glycolide) or obtained commercially with coatings of oleic acid or dextran.

• 我们合成的SNP是用二氧化硅或poly (D,L,-Lactide-co-glycolide)修饰，商业化来源的SNP包被了油酸或葡聚糖。