Sentence:  [T]he inventors of the present invention have found that the above-described recombinant gelatin contained in the <WSD>scaffold</WSD> for vascular endothelial cell migration according to the present invention markedly promotes migration of vascular endothelial cells. Therefore, use of the <WSD>scaffold</WSD> for vascular endothelial cell migration according to the present invention makes it possible to ensure that vascular endothelial cells migrate to a predetermined site to newly form blood vessels. 
Meaning of the word marked with <WSD> tags:  A structure that provides support for some other material.