n.胚盤

Daughter nuclei moved towards the egg surface in the form of cometic energids to form blastoderm during the cleavage. 卵裂時子核以“彗星”狀活質(zhì)體向卵表面遷移，形成胚盤；

Somite is divided from head to feet, blastoderm is divided from inner to outer . 由于內(nèi)臟最早起源于中胚層，根據(jù)經(jīng)絡(luò)"內(nèi)屬于臟腑"的特點，可以認為經(jīng)絡(luò)最早也來源于中胚層。

Furthermore, combining information of our research, it is emphatically introduced about microinjection into chicken, s blastoderm. 其中,結(jié)合本實驗室的情況,重點介紹了胚盤直接注射法。

Abstract: The early embryonic development of Chanis bilin eata Walker has been described.It includes three stages.The first is the formation of cleavage and blastoderm,the second is germ band and gastru al,and the third is coelom. 文摘:本文研究了豆天蛾早期的胚胎發(fā)育過程，歷經(jīng)卵裂與胚盤形成、胚帶與原腸形成及體腔發(fā)生3個階段。

After a period of growth, to 4 pm at the blastoderm over the weekend inside and outside the two germ layers, from the ectodermal layer of differentiated cells within the mesoderm to form embryos. 經(jīng)過一段時間的發(fā)育，到4周末時在胚盤內(nèi)、外兩胚層之間，由外胚層分化出一層細胞，形成胚內(nèi)中胚層。