For example , dr. kirchhausen studies the process by which cells engulf proteins and other molecules . He says animations help him picture how a particular three-legged protein called clathrin functions within the cell .

举例来说，科切豪斯博士在研究细胞吞噬蛋白质和其他分子的过程中，动画会帮助他描绘出一种被叫做网格蛋白（clathrin）的三足蛋白是如何在细胞内部行使功能的。