If the iron deficiency and protein hair will become yellow and split ends.

若缺铁和蛋白质头发就会变黄及分叉。

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The exhibit, according to the museum, brings together an extensive collection -- more than 60 objects associated with Lincoln's life, including an iron wedge used to split wood in the 1830s and his famous top hat, which he wore the night he was shot at Ford's Theatre by John Wilkes Booth.

CNN: For Obama, Lincoln was model president