The sensitive period was at late stage during the embryo development.
雌蚕高温干燥条件的敏感性，主要发生在胚胎发育至后期阶段。
In recent years, the business that embryo transplant application and the research of every kind of embryo engineering development all need a mass of high-quality earlier period embryo.
近年来，胚胎移植的商业应用和各种胚胎工程等方面的研究和开发都需要大量的优质早期胚胎。
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