The ferric ions signal of MNPs in the mouse blood sample. The influence of blood content on MNP determination was measured by mixed mouse blood and MNPs. Proteinase K used to digest the blood proteins might bind with MNPs or ferric ions. Each assay was performed in triplicates. Data are presented as means ± standard deviations.
Wu et al. Nanoscale Research Letters 2012 7:665 doi:10.1186/1556-276X-7-665