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. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: Immunol Res. 2011 May;50(1):1–9. doi: 10.1007/s12026-010-8199-1

Fig. 1.

Fig. 1

Systemic iron metabolism in mammals. Hepcidin is the key regulator of iron homeostasis. It controls the amount of iron released into the serum by phagocytes and duodenal enterocytes by modulating FPN expression on these cells. Expression of hepcidin by hepatocytes is regulated by circulating iron-transferrin levels, by iron requirements, and by inflammation