A pancreas--cell in the pancreas, for example, needs to make insulin and so the gene for insulin is transcribed.

举个例子,一个胰腺细胞,要分泌胰岛素,那么编码胰岛素蛋白的基因就会被转录

耶鲁公开课 - 生物医学工程探索课程节选

The collagen is excreted by cells themselves, so the matrix is made by cells.

胶原蛋白是细胞自己分泌的,所以说基质也是细胞制造的

耶鲁公开课 - 生物医学工程探索课程节选