胚

A study has indicated the expression of Smad2 in human dental pulp cells, but there are no reports about the functions of Smad2/3 in TGF- P modulating dental pulp repair and tooth development.

本研究的目的是观察人牙髓细胞内Smad2和Smad3分子在TGF-β1信号转导中的作用，以及TGF-β1对二者表达水平的调控方式，并检测Smad2和Smad3在牙胚发育的不同时期和正常、龋坏、炎症牙髓组织中的表达及其变化，旨在从细胞内信号转导水平探讨TGF-β调节成牙本质细胞分化和牙本质形成的分子机理，为揭示牙胚发育和牙髓损伤修复过程中基因表达的调控机制提供一定的实验依据。

On the rice for 24 days, and then freeze-dry and analyze its antioxidant properties and compare with mycelia, embryo rice and some commonly used antioxidants.

为一种珍稀的食药用菇，含有许多生理活性成份，本研究以胚芽米为固态发酵之基质，将樟芝接种於其上培养24天，所得之樟芝米於冻乾后针对其抗氧化活性进行评估，并与其菌丝体及胚芽米互相比较。

By removed ovary culture after positive and negative hybridization, produced interspecific hybridization, and have improved the hybrid seed through removed ovary culture and induced to shoot by culture medium MS, and produced hybrid F1, the plant of Brassica junce×B.pekinesis, the advantage characteristic of hybrid plant is similar to female nature;By cytology authenticating, chromosome number of F1 young flower bud cell (2n=28), it is the sum of monoploid chromosome number of female parent Brassica junce(2n=36) and male parent B.pekinesis(2n=20); The hybridization to Brassica junce×B.pekinesis, and embryonic bud come from removed ovary culture, and it found another form of plant embryo saving.

以芸薹属植物芥菜型油菜和白菜为研究对象，对其进行常规正反杂交后子房的离体培养，通过离体子房培养获得的杂种种子经MS培养基诱导成苗，获得了芥菜型油菜与白菜的杂种F1代植株，表现出杂种优势；通过细胞学的方法，鉴定了杂种F1幼蕾体的细胞染色体数为2n=28，为母本芥菜型油菜（2n=36）和父本白菜（2n=20）的单倍体染色体数之和；芥菜型油菜与白菜常规杂交后，经离体子房培养获得了&胚性芽&，确立了植物胚挽救的另一种形式。

Winter wheat varieties were used as materials, their coleoptile length, seedling length and main radicle length of wheat seedlings were investigated under different concentrations of PEG-6000 osmotic solution simulated drought stress, and their relations with the yield components and drought tolerance under rainfed and rainout shelters were further analyzed.

以6个抗旱性不同的冬小麦品种为材料，通过不同浓度的PEC-6000渗透溶液模拟干旱胁迫处理，研究了小麦苗期的胚芽鞘长度、苗高、主胚根长等性状，并与其在大田及防雨棚控水条件下的产量构成和抗旱性的关系进行分析。

By chicken embryo, minimum concentration of medicine of directly inactivated test、 treatment test and preventive test is 7.5mg/ml、 62.5mg/mland 31.25mg/ml;By CEF, minimum concentration of resiting NDVF_(48)E_8 and moderate virulence strain is 10mg/ml、 50mg/ml and 25mg/ml. However,the result of complex prescriptionpreventing and curing NDVF48Ej$ is not ideal.

在鸡胚上抗病毒试验中，对三株病毒起直接灭活、治疗和预防作用的最低药物浓度分别为7.5mg/ml、62.5mg/ml和31.25mg/ml；在鸡胚成纤维细胞上抗病毒试验中，对强强毒株和中等毒力株起直接灭活、治疗和预防作用不引起细胞病变的最低药物浓度分别为10mg/ml、50mg/ml和25mg/ml。

A-amylase gene being greatly enhanced by gibberellic acid produced by the embryo.

在种子萌发过程中α－淀粉酶水解胚乳中的淀粉，胚内产生的赤霉素可以促进α－淀粉酶基因的转录。

METHODS: The osteoblasts were harvested from the frontal bone of 15-day SPF chicken embryos by the enzyme digestion, and treated with various mass concentrations of estrogen (0, 5, 10, 20, 100, 200, 400, 800, 2 000, 20 000 ng/L) and letrozole (0, 5, 10, 25, 50, 100, 250, 500, 1 000, 5 000 μg /L).

取15日龄SPF鸡胚，酶消化法获取鸡胚额骨成骨细胞，分别采用不同质量浓度雌激素(0，5，10，20，100，200，400，800，2 000，20 000 ng/L)和来曲唑(0，5，10，25，50，100，250，500，1 000，5 000 μg /L)处理。

In this study a germ-somatic cell coculture model of 18-day-old chicken embryo ovarian cells was established to evaluate effects of follicle-stimulating hormone and 17β-estradiol (E2) alone or in combination on germ cell proliferation.

本实验建立了鸡胚（18日胚龄）卵巢构建生殖细胞和体细胞的共培养模型，并研究卵泡刺激素、17β雌二醇(E2)以及二者联合处理对生殖细胞增殖的影响。

Weeks, dental plate as part of the rapid proliferation, the formation of upper and lower total of 20 deciduous tooth.

乳牙胚的发生始于胚胎第6周至第7周，牙板的一部分迅速增殖，形成上下颌共20个乳牙牙胚。

Secondly, to investigate the effect of FK506 on Human embryonic Schwann cell migration in vitro.

其次，研究FK506对人胚雪旺细胞体外培养迁移活性的影响，结果显示FK506能促进人胚雪旺细胞的迁移并抑制成纤维细胞的生长，这种作用在较低浓度时也能产生明显效果。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。