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In this report , we demonstrate in cultured 293 cells overexpressing wild - type or mutant HFE proteins that both the wild - type and H63D HFE proteins form stable complexes with the transferrin receptor ( TfR ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 None