Contact with the epidermal cells of Health dentate processes, and mutual chimera. 表皮细胞接触处密生齿状突起,且互相嵌合。
Even in today's machines, contact with tubing can damage cells, or they may be sheared or crushed by the roller pumps. 然而即使是现在的机型,细胞接触到管子也会受损,或者受到滚筒式帮浦的拉扯或挤压。