胚

The snail was found to have an indirect developmental type in the early development. The fertilized eggs were oval-shaped and discoidal cleavage. Embryonic development stages were divided into cleavage, blastula, gastrulae, trochophore, and intra-membrane veliger. Larval development stages included veliger, late veliger and crawling larvae metamorphosed to juvenile.

结果表明：黄口荔枝螺卵囊高度平均为7.33 mm，卵粒数量平均为165粒；黄口荔枝螺的早期发育属间接发生型，受精卵呈椭圆形，卵裂为盘状卵裂；在卵囊内，胚胎发育包括卵裂期、囊胚期、原肠胚、膜内担轮幼虫、膜内面盘幼虫；幼虫发育包括面盘幼虫、后期面盘幼虫和匍匐幼虫。

Endosperm, cells disorganize gradually along with embryo development.

随胚的发育和生长，胚乳细胞逐渐解体。

The effects of IGF-1 in different concentrations was determined on the development of blastocyst in hyperglycemic conditions (30.0 mol/L glucose) in vitro, as well as the apoptosis of embyro cells by using nuclear DNA double-dyed assays.

观察不同浓度胰岛素样生长因子-1(insulin-like growth factor-1， IGF-1)对体外高糖环境胚泡细胞发育的影响，利用细胞核DNA双染实验观察不同浓度IGF-1作用下胚泡细胞的凋亡。

Derived from two embryonic germ layers, the ectoderm and the endoderm.

双胚层的具有两个胚层的。

Under appropriate conditions embryonic stem cells have been shown to differentiate in vitro to multiple cell types of endoderm, mesoderm and ectoderm.

一旦撤除分化抑制因素，或添加适当的诱导剂，ES细胞可分化为内胚层、中胚层和外胚层的多种类型的特化细胞。

Chd protein is able to dorsalize mesoderm and to neuralize ectoderm in Xenopus gastrula explants at 1 nM.

Chd蛋白质可以使中胚叶背部化，也可以背化1海哩的爪蟾肠胚外植体里面的外胚层。

Between the ectoderm and endoderm is mesoderm, which forms the muscles, reproductive organs, blood vessels and excretory organs.

在外胚层和内胚层之间是中胚层，它形成肌肉、生殖腺、血管和排泄器官。

During this stage, the cells group into three layers, the first is the 'ectoderm' which then in turn generates the 'mesoderm' and 'endoderm' layers.

在这一阶段，细胞分化为3层，第一层是"外胚层"，它最终会形成中胚层和内胚层。

Ectrodactyly, ectodermal dysplasia and clefting syndrome is characterized by split hand-split foot malformation, congenital ectodermal dysplasia and cleft lip with or without cleft palate.

目前，以先天性缺指、并指或手足裂和外胚叶发育不全伴或不伴腭裂的唇裂为主要临床表现的先天性缺指-外胚叶发育不全-唇/腭裂综合征的病因仍然不明，给疾病的防治带来了较大的困难。

Thefertilization of eggs in large embryo sac may result in the embryo far from forming.

大胚囊中的卵细胞受精发育可能是形成中位胚的主要原因。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。