定向发育 meaning in English

directive breeding

One of the three chemicals , hg ( code ) , showed potent inducement effect ( 43 . 3 % ) in a certain concentration in the course of differentiation
其中药物hg在适当的浓度下对胚胎干细胞定向发育成心肌细胞表现出强烈的诱导作用( 43 . 3 ) 。
The scientists report that destroying cells destined to become the pancreas leads to a proportionally smaller organ , whereas the liver reaches normal size despite the loss of starting cells
文章报道，破坏定向发育成胰腺的胚胎细胞可导致胰腺发生不同程度的体积缩小，而经过相同处理的胎肝最终仍可形成正常大小的肝脏。