胚胎发育

These data give insight into the development mechanism and evolution of the amphioxus and vertebrates.A novel gene, AmphiSom, was identified in amphioxus Branchiostoma belcheri tsingtauense, and its sequence and developmental expression pattern were determined.

因此虽然文昌鱼不是脊椎动物的直接祖先，但是它是现存的与脊椎动物直接祖先最接近的无脊椎动物，是研究动物进化和动物胚胎发育的典型材料。

The effects of antisense oligodeoxynucleotides of LIM class homeobox gene Bblim in Amphioxus(Branchiostoma belcheri tsingtauense) on embryonic development were studied.

研究了青岛文昌鱼LIM类同源框基因Bblim反义寡核苷酸对文昌鱼胚胎发育的影响。

In this paper, the myogenic bHLH gene, AmphiMDF, expressed in the embryos of amphioxus (Branchiostoma belcheri tsingtaunese), has been cloned by the methods of degenerative PCR and RACE.

本文利用简并性PCR和RACE等方法克隆了青岛文昌鱼(B.belcheritsingtaunese)胚胎发育过程中表达的生肌bHLH基因，AmphiMDF。

Branchiostoma belcheri tsingtauense ; Bblim ; LIM ; Homeobox gene ; Antisense oligodeoxynucleotides ; Embryonic development ; Electroporati

青岛文昌鱼； Bblim ； LIM ；同源框基因；反义寡核苷酸；胚胎发育；电脉冲

Effects of Laser Irradiation on Early-stage Embryonic Development of Bufo bufo gargarizans.

激光照射对中华大蟾蜍早期胚胎发育的影响

Based on the features of morphology, anatomy, cytology, pollinating insects, embryogenesis and chemistry of representing species,the authors considered that in this family Chimonanthus may be the most advanced, Calycanthus the more primitive, and Sinocalycanthus the intermediate.

根据蜡梅科代表种的解剖学、花粉形态、传粉昆虫、胚胎发育、细胞学及化学成分的研究，作者认为蜡梅科中蜡梅属是本科最进化的属，美国蜡梅属是最原始的属，夏蜡梅则介于二属之间。

During the development of dental germ, enamel matrix proteins secreted by epithelial root sheath could induce dental follicle cells to differentiate towards cementoblast and form acellular cementum finally on the surface of tooth root. Many researches of domestic and oversea scholars suggest that enamel matrix proteins could effectively induce periodontal regeneration, and the structure and function of this regenerated tissue are similar to healthy periodontal tissue. Moreover, the regeneration process is nearly the same to that of embryonic development of periodontal tissue.

自发现釉基质蛋白可诱使牙囊细胞向成牙骨质细胞方向分化并在根表面形成无细胞性牙骨质以来，国内外学者做了大量研究，结果表明釉基质蛋白能有效诱导牙周组织的再生，且这种再生组织的结构和功能更接近于健康的牙周组织，并且再生过程也与牙周组织的胚胎发育过程类似。

It was established that during the period studied choroidal epithelium of NGF and TrKA positive reactivity were present.

研究表明，在胚胎发育期间，脉络丛上皮细胞的分化能诱导脉络丛基质及血管的分化[1]。

Then cloacal membrane is divided into urogenital membrane and anal membrane, until the eighth week, anal membrane ruptures to give rise to anus.

随着胚胎发育，尿直肠隔不断下降与泄殖腔膜的距离越来越小，逐渐与泄殖腔膜融合，同时泄殖腔膜也被分为前后两部分，前者为尿生殖膜，后者为肛膜。第8周时，肛膜破裂，肛门形成。

Autophagy is one of the major degradative pathways in eukaryotic cells,and it is the only one with the capacity to degrade entire organelles.

我们发现，细胞自我吞噬通路基因的突变体的体细胞在胚胎发育早期以及幼虫早期，会有P颗粒的异位聚集。

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。