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Uptake of the [59Fe] from the [59Fe]-labeled SPION by organs at various time points in Sprague Dawley rats (A) male (B) female (n=5 for each sex, mean ± standard deviation).
Abbreviations: n, number; h, hours; min, minutes; S Int, small intestine; L Int, large intestine; SPION, superparamagnetic iron oxide nanoparticles.
