Receptor-mediated transferrin endocytosishttp://www-rics.bwh.harvard.edu/sickle/iron_transport.html

• Here, an iron transport molecule shuttles the iron to various points in the cell, including mitochondria and ferritin

• Ferritin molecules accumulate excess iron

• Lysosomes engulf aggregates of ferritin molecules in a process termed "autophagy"

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