Most grass embryos have a flap-like structure known as the epiblast.

大多数禾本科胚有一片瓣状结构通常称为外胚叶。

All bdelloid rotifers are female, and they make embryos without any need for sperm.

所有的蛭形轮虫都是雌性，而且牠们不需要精子就可以产生胚胎。

They are engaging in an embryo research.

他们正在进行一项胚胎研究。

The occurrence of more than one embryo in the ovule denotes polyembryony.

在胚珠有一个以上的胚发生是表示多胚现象。

The development characters of small-nutted longan embryo were studied by paraffin method.

摘要采用石蜡切片法研究小核龙眼胚胎发育的特点。

Objective To study the effect of embryo neural stem cell transplantation(SCT) in neuronal ceroid lipofuscinosis(NCL).

目的研究应用神经干细胞移植治疗神经元蜡样质脂褐质的效果。

Thermal biology research of Rana chensinensis in different development stages(egg,embryo,tadpole,froglet and adult)was carried on the summary.

本文对国林蛙卵、胚胎、、体和成体等不同发育阶段的热生物学研究进行了综述。

We have just one editor and a reporter, so you could say that the newspaper exists in embryo.

我们只有一名编辑和一名记者，可以说这份报纸还只是在萌芽阶段。

The sows of natural oestrus ovulated more swiftly than the superovulation, and the embryo quality of nature was better.

超数排卵影响胚胎的质量，自然发情母猪较超数排卵母猪排卵较快，且胚胎质量较好。

The larger embellum could be used as a secondary screening indicator for identifying aposporous embryo sac in Apluda mutica.

存在发达的胚珠附器是水蔗草无孢子生殖胚囊的特点之一.

In the embryo an undifferentiated mesodermal component of an early trunk or tail segment or metamere, derived from paraxial mesoderm.

在胚胎时，一个无法区别的胚层组成一个早期躯干、或尾部片段或体节，衍生自轴旁的胚层。

Toxoplasmosis ophthalmopathy is mainly characterzied by congenital malformation from optic pit and optic vesicle s lesion at earlier embryo period,and retinochoroiditis from inflammation.

弓形虫眼主要表现为胚胎早期受弓形虫侵犯使视窝及视泡的形成发生障碍引起的先天畸形以及炎症损害引起的视网膜脉络膜炎。

The mature embryo is corn posed of radicle, coleorhiza, plumule, coleoptile, scutellum and epiblast.That is the typical structure of the mature embryo of grass.

成熟胚具有胚根、胚芽、盾片、胚芽鞘、胚根鞘、外胚叶等典型禾本科植物成熟胚的结构。

There are 5 stages during the development of embryo, including the stage of 2-celled proembryo, multicellular proembryo, globular proembryo, pyriform proembryo, differential embryo and mature embryo.

胚胎发育经过二细胞原胚、多细胞原胚、球形原胚、梨形原胚、分化胚和成熟胚阶段。

Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.

目的探讨卵细胞第一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。

If the gestation period does not pay attention to the nutrition, easy to cause the denutrition, to will be pregnant mother and the embryo will have the adverse effect.

孕期如果不注意营养，容易引起营养缺乏，对孕妈妈及胎儿将产生不良影响。

The present study is the first to report on the usefulness of puromycin for production of enhanced green fluorescent protein (EGFP) transgenic piglets after somatic cell cloning and embryo transfer.

本研究是第一次报道在体细胞克隆和胚胎移植后成功应用嘌呤霉素标记获得了转强化型绿色荧光蛋白（EGFP）基因的小猪。

While this is occurring an unfertilized egg cell is taken from a Blackface ewe with its DNA filled nucleus taken out leaving a nucleus free egg cell that will later produce an embryo (3).

（接着如果把它）放在一个细胞核已去除的黑面母羊的的营养细胞，它一会儿就会产生一个胚芽。