题目：
细胞内铁存在于（）
A.细胞间隙
B.巨核细胞
C.幼红细胞
D.巨噬细胞
E.细胞核
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C
细胞内铁存在于（） A.细胞间隙 B.巨核细胞 C.幼红细胞 D.巨噬细
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