查询词典 embryo

ObjectiveUsing fluorescence in situ hybridization to analyze chromosome mosaicism in human preimplantation embryos and access the influence of mosaicism on in vitro fertilization-embryo transfer and preimplantation genetic diagnosis.

目的应用荧光原位杂交技术对人类早期胚胎染色体的嵌合型进行初步分析，并探讨胚胎染色体嵌合型对常规体外受精-胚胎移植成功率以及植入前诊断的影响。

The morphology of M2 and M3 was observed in hothouse and mutants on cotyledon and root of seedling, or embryo of seed were identified. The result showed that there were 8 types of mutative treats on cotyledon, including light-yellow cotyledon, yellowish cotyledon, trump-shaped cotyledon, multilobed cotyledon, non-cotyledon, single-cotyledon, tricotyledon and quadrcotyledon.

M_2和M_3的水培和形态学观察的结果发现，子叶性状出现浅色、黄化、喇叭形、多耳突、无子叶、单子叶、三子叶、四子叶等8种变异类型；根系性状出现短小根、发达根、无侧根和弱向地性等4种变异类型；种胚性状中发现了多胚变异。

Neural crest cells are a transient population of multipotent progenitors that give rise to numerous cell types in the embryo.

神经嵴细胞是一个暂时性的原生代细胞，在胚胎可发生很多类型的细胞。

In order to compare the homology of the gene encoding VP2 between MDPV-Q and MDPV which was registered in the GenBank, also in order to find out changes of the VP2 gene and the immuno-genicity between the wild-strain MDPV-Q and the attenuated strain MDPV-26 which derived by continued passage of virulent wild-type in muscovy duck embryo, a pair of primer (LHMP7/LHMP8) was designed. The upper one LHMP7 and the lower one LHMP8 corresponded to the MDPV-specific nucleotides sequence 2885-2900 and 4618-4604 respectively, according to the MDPV nucleotide sequence databases. The length of the sequence embraced by the primers was 1734bp.

为了获取这一基因片段与国外分离株进行同源性比较，同时也为了了解MDPV强、弱毒株VP2基因之间的异同关系，及其免疫原性的变化规律，通过DNA重组技术，设计了一对引物LHMP7／LHMP8，该对引物选取位于2885～2900及4618～4604的两段序列，跨幅为1734bp，并在这两条引物中分别加入两种限制性核酸内切酶SacⅡ和KpnⅠ的酶切位点，分别对MDPV-Q和由该株病毒经人工致弱后得到的MDPV-26株进行PCR扩增，并将PCR产物克隆到pMD18-T载体上，分别得到二个重组子：pMD18-T—M-Q VP2和pMD18-T-M-26 VP2。

Bractlets developed, herbaceous or succulent, navicular or similar to leaves, surrounding perianth (in Sympegma bractlets absent, but flowers fascicled at apex of branchlets); stigmas papillose only adaxially; embryo conic-spiral rarely planospiral

小苞片发展， herbacfous或肉质的，具小乳突的柱头只正面；很少的胚圆锥形螺旋形平面螺旋状 4

Her veterinary skills include artificial insemination, embryo transfer, uterine flushing, and necropsy.

在兽医领域的经验包括人工授精、胚胎移植、子宫冲洗以及尸体剖检。

ConclusionIt has good effect to separate total alkaloids from embryo of Nelumbo nucifera gaertn seed by macroporous resin DA201 which can be used for a long time.

结论DA201大孔吸附树脂对莲心总碱的分离纯化效果良好，树脂使用寿命长，具有较好的工业化前景。

Min-1.ConclusionIt has good effect to separate total alkaloids from embryo of Nelumbo nucifera gaertn seed by macroporous resin DA201 which can be used for a long time. There is preferable industrialized foreground.

min-1。结论DA201大孔吸附树脂对莲心总碱的分离纯化效果良好，树脂使用寿命长，具有较好的工业化前景。

Comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six subclasses: Magnoliidae and Hamamelidae; Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae.

由生长双子叶胚胎和网状叶脉叶子的种子植物组成；分为六个亚纲；木兰群和金缕梅亚纲等。

Neurulation is an important stage in the embryo development of vertebrate, during which the ectoderm thickens into epidermal neural plate and then forms neural folds and neural tube.

脊椎动物胚胎发育过程中，神经胚期是一个重要的发育时期。这个阶段胚胎外胚层增厚形成上皮型神经板，神经板两侧隆起形成神经褶，随后神经褶两侧向背中线合拢并愈合成神经管。

The X-ray diffract was used to analyze the crystal structure of the composite. Results show that after the talc was treated with blend coupling agent, the crystal structure of talc changed, and effect Intercalation phenomenon.

通过X射线衍射分析可知，用混合偶联剂对滑石粉进行预处理后，滑石粉晶体结构发生改变，产生了插层现象，使PP／滑石粉复合材料为纳米复合材料。

An authentic Maui wedding might require the services of a 'kahu', which is a Hawaiian minister.

毛伊可能需要一个真实婚礼服务'kahu'，这是夏威夷部长。