胚胎发育

ObjectiveThe aim of the research was to study the absorption and utilization laws of calcium and phosphorus during embryonic development period of France Muscovy duck.

为了了解法国番鸭胚胎发育期间钙、磷的吸收利用规律。

Open lesion occur in early stage and are called spina bifida aperta or myelomeningocele.

开放性脊柱裂发生在胚胎发育的早期，又叫脊髓脊膜膨出。

Besides neural tube, qBrn-2 was also expressed in notochord, neural crest, myotome and retina, whereas Brn-2 was not.

另外，与Brn-2不同，在鹌鹑胚胎发育中的中脑与后脑交界处作者没有发现qBrn-2表达区域的空缺。

At water temperature of 16.0-17.2 ℃, the process of embryonic development could be divided into 24 stages, which were described as follow: fertilized egg at 0 min, 2-cell stage at 75 min post fertilization; myotome forming stage at 43 h PF, and hatching-out stage at 94 h PF when the accumulative temperature reached 1616.8 ℃.h, and the average size of larvae was about 3.8 mm in body length.

梭鲈胚胎发育过程可分为24期，在水温16.0~17.2℃范围内，受精75 min开始第1次卵裂，受精后43 h开始形成器官，受精后约94 h开始出膜；刚出膜的仔鱼全长平均为3.8 mm；从受精到孵化出膜总积温为1 616.8℃。h。

Noggin is involved in numerous development processes , such as neural tube fusion and joint formation .

Noggin作为胚胎发育的重要基因，在进化过程中相当保守，在不同的物种间具有高度同源性。

By RT-PCR and in situ hybridization, we found Pmr1 was expresses from early neurula (st.15) in the ventral part of embryo, then located in the anterior ventral blood island which is the primitive myeloid cells generated region.

Pmr1是从非洲爪蟾肝组织提取出的mRNA核酸内切酶，参与雌激素诱导的mRNA降解过程。但是Pmr1在胚胎发育中的分布和作用尚不明了。

However, the ubiquitous expression of AmphiLysC in non-digestive tissues such as ovaries, testes, notochord, gill and muscle suggests that it may also play a non-digestive role like antibacterial defense.

但是，在文昌鱼成体其他组织如卵巢、精巢、脊索、鳃和肌肉中也检测到了AmphiLysC的表达，同时原位杂交结果也表明，AmphiLysC在文昌鱼胚胎发育的不同阶段（从2个细胞到2天幼虫）都有广泛的表达。

Embryo sac A large oval thin-walled sac in the nucellus of flowering plants in which egg fertilization and subsequent embryo development occurs.

胚囊：是存在于显花植物胚珠珠心中的一个大型椭圆状的囊状结构，卵细胞受精和随后的胚胎发育均在这里进行。

Immune system, osmoregulation and excretion, chemical regulation, reproduction

疫系统、渗透调节及排泄系统、内分系统、生殖及胚胎发育和经系统。

Osmoregulation in freshwater forms is usually by means of a contractile vacuole.

它们在胚胎发育过程中，显示为原口动物类型。

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。