But up to today, the technique is far from perfection because of the low blastocyst production rate and the poor quality of the blastocyst.
英
美
- 但是到目前为止体外培养的哺乳动物早期胚胎,高质量的囊胚发育率还不高,都还远远不能满足人们生产和研究的需求。