胚细胞

These epithelial elements arise embryologically from foregut endoderm in the process of bronchial tubular growth.

这些表皮细胞在胚胎学上把源于支气管生长过程中的前内脏叫内胚层。

In addition, the fluorescent study revealed significant membrane internalization in aposymbiotic endoderm cells, suggesting a dynamic nature of membrane in these cells.

同时萤光染色的结果显示，许多具有膜特性的结构存在於某些没有共生藻的內胚层细胞內。

It is the optimal endoderm inducing protocol to combine Wnt3a with Activin A for the 1st day.

Wnt3a和Activin A共同作用1d，是有效促进人胚胎干细胞向限定性内胚层细胞分化的最佳作用时间窗。

Endoderm cells in skin-muscle myofibrils along the body axis ring-shaped arrangement of the contraction of the body slim.

内胚层皮肌细胞的肌原纤维沿体轴呈环形排列，收缩时使身体细长。

Cells in different parts of the endosperm vary somewhat in composition.

细胞在胚乳的不同部分其组成有所不同。

It accumulates in the amyloplasta of the endosperm cells during grain filling.

在谷粒灌浆时，它在胚乳细胞的造粒体中积累。

It could be caused by both no normal endosperm formation and lack of energy.

估计与不能形成正常胚乳细胞，没有能量供应有关。

In blastula embryos and 50% epiboly embryos, the zygotic pou2 transcript is also distributed in every blastomere cell. At the stage of 90% epiboly, expression of pou2 converges to the dorsal midline of embryos and locates in two waves of lateral neural plate and two transverse stripes in the brain region. In embryos at 100% epiboly, pou2 transcript is restricted in the neural plate and areas of presumptive midbrain amid himdbrain. From somite stage, gibel carp pou2 can not be detected any more, which is consistent with the RT-PCR result.

在高囊胚期和50%下包期，高度表达的合子转录本仍在所有的胚盘细胞中，但至90%下包期时，pou2的表达向胚胎背部的正中线汇聚，集中在神经板的两侧区域和脑部的两条横向条带在100%下包期时，pou2的表达集中在神经板的中间区域以及预期形成的中后脑区域至体节期时，转录本消失，这与RT-PCR结果高度一致。

Temporal and spatial expression pattern of gibel carp pou2 during embryogenesis was investigated by RT-PCR and whole-mount in situ hybridization. RT-PCR result indicates that there is maternal transcript of gibel carp pou2 in early embryos and the zygotic pou2 transcript is abundantly expressed from blastula stage. Large amount of pou2 transcript is detected at both 50% and 90% epiboly stages. At 100% epiboly stage, however, the pou2 transcript reduces rapidly and disappears at the later embryogenesis. Whole-mount in situ hybridization shows that the maternal transcript ubiquitously exists in all blastomere cells.

我们用RT-PCR和整体原位杂交的方法研究了银鲫pou2基因在胚胎发育过程中的时空表达图式RT-PCR结果显示，银鲫pou2基因有母源转录本，其合子基因在高囊胚期强烈表达，在50%下包期和90%下包期也有高量的转录本，但在100%下包期表达量急剧降低，至体节期时已经完全检测不到其转录本胚胎整体原位杂交结果显示其母源转录本在所有的胚盘细胞中。

The effects of 4-PU and 6-BA on formations of the calli and adventitious buds from epicotyl explants in peanut were studied in the experiment.

摘 要：以'汕油523'花生上胚轴为外植体，研究细胞分裂素4-PU和6-BA对愈伤组织诱导及不定芽发生的效应。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷