目前还不清楚是否有伪造血蛋白出口到其他国家。

It remains unclear if any of the fake albumin was exported to any nations.

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当蛋白质结构层密度足够防止细胞渗透进人造血管时，研究人员会在其表面覆盖一层纤维原细胞片。

Then the researchers layered another sheet of fibroblasts on the outside of this scaffold, which is dense enough to prevent the cells from easily migrating to the inside of the engineered vessel.

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骨髓是一种红色、海绵状的东东，居住在很多大骨头的腔隙（骨髓腔）里；它需要铁元素、维生素B 12 、叶酸等原料来制造血红蛋白和红细胞。

To produce hemoglobin and red blood cells, your body needs iron, vitamin B-12, folate and other nutrients from the foods you eat.

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