Table 1.

Iron content in feces samples collected from control and s-SPION injected mice. Iron quantified by AAS.

Time Point	Total Iron in Feces (µg) from Mice Injected with
	10 nm s-SPIONs	25 nm s-SPIONs
Control	10.8 ± 2.5	10.8 ± 2.5
1 h	28.4 ± 17.7	20.6 ± 13.9
4 h	28.0 ± 14.0	11.0 ± 3.7
24 h	7.2 ± 2.4	11.8 ± 1.5
48 h	9.5 ± 1.1	13.4 ± 2.8
1 week	11.5 ± 0.3	8.6 ± 2.1