If you could introduce that gene you'd make the chemical, in this case it's a protein called vascular endothelial growth factor.

通过导入一种生成特殊化学物质的基因,这种疗法中指的是一种蛋白,叫做血管内皮生长因子

耶鲁公开课 - 生物医学工程探索课程节选

Then they'd be a factor in what might be a very finely balanced future parliament.

BBC: Numbers game

However, a UK expert questioned whether vitamin D was the principal factor behind the high rates of Crohn's disease.

BBC: Bowel disease linked to vitamin

And really, there wouldn't have been much of a downside if Acer went with that form factor instead: you'd get the cradle and keyboard in one piece, along with a built-in battery and a smattering of ports.

ENGADGET: Acer Iconia W700 review: a Core i5 Windows 8 slate that doesn't skimp on battery life