This cell can only be an effective barrier if there's no way to get past it.
这个细胞只有在无法通过时才能成为有效的屏障。
2
Because the capillary wall rather than the parenchymal cell forms the barrier, the brain's permeability characteristics differ from those of other tissues.
由于这一屏障是由毛细血管壁构成，并非实质细胞，因此，脑组织的渗透性特征也不同于其他组织。
3
Objective to investigate the role of cell apoptosis in the gut mucosal barrier dysfunction in rats undergoing cardiopulmonary bypass (CPB).