a mass of undifferentiated cells from which an organ or body part develops
造句
It seemed, therefore, that all scientists needed to do was figure out how to induce an amputated limb to form a blastema. 因此科學(xué)家的目標(biāo)，就是找出如何誘導(dǎo)斷肢形成芽基的方法。
They found that salamander regeneration begins when a clump of cells called a blastema forms at the tip of a lost limb. 他們發(fā)現(xiàn)，蠑螈再生是從一團被稱為芽基的細胞在斷肢頂端形成的時候開始的。