近几年来，国际上对于细胞运动分子机制的研究取得很大进展，利用组织培养细胞进行的大量的体外实验证明，皮层蛋白很可能直接参于细胞运动的产生过程。

Recently, great progress has been made in understanding of the mechanism of cell movement in vitro, and probably, cortactin acts directly on the molecular machines of cell motility.

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这是一只果蝇背向闭合行为的显微图片，其中被涂成了红色的蛋白质活跃于皮层细胞的勾缝四周。

In this micrograph of a dorsal closure in a fruit-fly embryo, the protein actin is marked red, prominent around the gap in the epithelial cells.

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胶原蛋白是其中一个主要组成部分的皮肤真皮层。

Collagen is one of the major components of the skin dermis.

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