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.
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。
2
Vessel cleanliness, maintenance history, and layered or blended lot management may be included in the business manufacturing rules and can be addressed and managed within the application.