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我们都知道，骨髓细胞可以造血，也可以恢复免疫系统的功能。
Bone marrow cells are known to help restore blood and immune system function.
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骨髓包括基质系统和造血系统。
There are hematopoietic cell system and stromal cell system in the bone marrow.
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骨髓包括基质系统和造血系统。
There are hematopoietic cell system and stromal cell system in the bone marrow.
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