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1 Donner Laboratory, University of California, Berkeley, Calif.
In patients with spontaneous chronic low plasma latent iron-binding
capacity, a large fraction of the intestinally absorbed iron is deposited in the
liver without prior appearance in the systemic plasma. Such hepatic iron is
not released to any large extent during the subsequent 2 weeks. Our results are consistent with the hypothesis that iron absorbed from the
intestinal tract is not initially bound to transferrin. When the plasma latent
iron-binding capacity is normal, iron binds to transferrin prior to reaching
the liver; when the plasma latent iron-binding capacity is low, a portion of
the iron reaches the liver either unbound or abnormally bound to transferrin,
resulting in its immediate hepatic deposition.
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