The mother provides the embryo with nourishment and a place to grow.母亲为胎儿提供营养和成长的空间。These developments were foreseen in embryo more than a decade ago.这些发展早在十多年前的萌芽阶段就已预见到。It was an embryo idea rather than a fully worked ...
The sex of the embryo is predetermined at fertilization.胚胎的性别早在受精时就决定了。...an ideal system for studying the development of the embryo...研究胎儿发育过程的理想方法Metabolic activity quickly develops in the cells of the embryo and the a...