The result is a tube of the length and diameter of the original scaffold, that is composed of collagen and smooth-muscle cells—a structure similar to a natural blood vessel.
所得物保持原来支架的长度和直径，由胶原蛋白和平滑肌细胞组成，其结构类似天然血管。
Among them, the size of blood vessel diameter is the determining factor in the impact resistance.
其中，血管管径的大小又是影响阻力的决定因素。
Such modulation of vessel diameter permits changes in blood flow to occur in the brain, as well as in other organs and tissues.
调节血管直径可使大脑及其它组织和器官中的血流量发生改变。
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