In order to attract the rabbit's own stem cells to re-grow the cartilage, channels in the scaffold were filled with a growth factor protein.

VOA: standard.2010.08.11

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

One of the interesting properties of cells that are in exponential growth is that the time to increase the cell number by a factor of 2 is always the same.

细胞有一个有趣的性质,那就是在指数增长阶段,细胞增长的速度,永远是以二为底数来增长的

耶鲁公开课 - 生物医学工程探索课程节选