胚胎形成的

Congenital Preauricular Fistula (MIM 128700) is a common auricular abnormality, the incidence of which is around 1%. The formation of CPF is closely associated with embryological development of the auricle, which is developed from the first and second branchial arches.

先天性耳前瘘管（MIM 128700）是耳鼻咽喉科常见的遗传性疾病，其患病率接近1％，一般认为是胚胎期形成耳廓的第一、第二腮弓的六个小丘样结节融合不良或第一腮沟封闭不全所致。

Congenital Preauricular Fistula (MIM 128700) is a common auricularabnormality, the incidence of which is around 1%. The formation of CPFis closely associated with embryological development of the auricle,which is developed from the first and second branchial arches.

先天性耳前瘘管(MIM 128700)是耳鼻咽喉科常见的遗传性疾病，其患病率接近 1%，一般认为是胚胎期形成耳廓的第一、第二腮弓的六个小丘样结节融合不良或第一腮沟封闭不全所致。

The results indicate that day 5 p.c.primitive ectoderm cells are able to participate in embryogenesis after be-ing introduced into day 4 p.c.blastocysts and result in the production of adult chimeras.

嵌合体与C_(57)BL/6 J小鼠交配后所得的结果表明，原始外胚层细胞在嵌合体内能形成有功能的配子。上述结果说明，原始外胚层细胞与内细胞团细胞、体外培养的胚胎干细胞一样，具有发育全能性。

Most of the food products used by man are derived from processes related to embryogenesis and seed formation in higher plants.

人们所用的大部分食品产物，是由与高等植物胚胎发生和种子形成有关的过程中产生的。

We isolated a transcriptional enhancer element from the genome of an extinct marsupial, the Tasmanian tiger ( Thylacinus cynocephalus or thylacine), obtained from 100 year-old ethanol-fixed tissues from museum collections.

艾契尔曾试图复制袋狼。在实验过程中，研究人员将袋狼的一个基因植入老鼠胚胎后，检查该基因的功能，结果发现，发育中的老鼠软骨原骨已经具有功能，最后并可以形成骨骼。

To clarify the relationship between myelination and the expression of PSA-NCAM we systematically investigated its expression in the human forebrain from embryonic stage to midgestation (19-24 gestation weeks, gw).

为明确多聚唾液酸-神经细胞黏附分子的表达和髓鞘形成之间的关系，研究者系统地研究了从胚胎期到妊娠中期它在人前脑中的表达。

Furthermore, ed embryo exhibit extra C.N.S. and P.N.S. neurons. Ed also serves in Drosophila eye development and mesothoracic bristle development. Photoreceptor cells of the ommatidium and bristles are sensory nerves. We suggest that Ed might meditate the development of the nervous tissues.

此外，ed mutant胚胎有过多的中枢以及周边神经细胞生成，Ed亦参予在果蝇复眼发育以及背板刚毛的形成过程，果蝇复眼感光细胞以及刚毛均为周边神经细胞，显示Ed对於神经细胞生成具有某种程度的影响。

The expression of nestin antigen, NSE and GFAP were identified by immunohistochemistry, and the number of NSE-positive cells and GFAP-positive cells were dividedly counted.

结果大鼠胚胎神经管神经上皮干细胞在无血清培养基中可形成大量呈nestin抗原阳性细胞构成的神经球，经传代有血清培养后分化为NSE阳性和GFAP阳性细胞，其中NSE阳性细胞占细胞总数的47.7％，GFAP阳性细胞占细胞总数的39.8％。

Miscarriages are most common in the first three months when new cells are developing.

流产大部分发生在怀孕的头三个月里，这个时候新的胚胎正在形成。

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。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失