下列有关红骨髓描述中正确的是A.成人存在于髓腔内B.不存在于板障内C.髂骨、胸骨...

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【单选题】

下列有关红骨髓描述中正确的是

成人存在于髓腔内

不存在于板障内

髂骨、胸骨、椎骨内终生存在

儿期造血，成年期不造血

黄骨髓不能转化为红骨髓

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