Figure 2.

Temporal labeling dynamics for a) 2:1 MP using three doses in Table 2 and b) for all four particles using only Dose 2. Data are means +/− SEM. In a) statistical insignificance is reached after 6 hours labeling for the two lowest doses, while it is reached for the high dose (p<0.05) after 10 hours. In b) statistical significance in intracellular iron content was measured (p<0.01) between MP and NP formulations at all time points.