Neural stem cells could be labeled with SPIO and labeling efficiency was 100%, Prussian blue staining showed numerous blue-stained iron particles in the cytoplasm.

• 该方法标记神经干细胞的有效率为100%25,普鲁士蓝染色证实了每个标记细胞胞质内有多少不等的蓝染铁颗粒。