斑疹伤寒立克次体IgG ELISA检测试剂盒

Typhus group IgG ELISA Kit

广州健仑生物科技有限公司

主要用途：用于检测人血清中的斑疹伤寒立克次体IgG抗体

产品规格：96T/盒

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斑疹伤寒立克次体IgG ELISA检测试剂盒

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【公司名称】 广州健仑生物科技有限公司
【】    杨永汉 
【】 
【腾讯 】 2042552662
【公司地址】 广州清华科技园创新基地番禺石楼镇创启路63号二期2幢101-3室
【企业文化】

线虫发育的某一时刻，称为锚细胞的一种特殊细胞打破密集的片状膜，将线虫的子宫从外阴分离出来，开拓线虫的抗原抗体道。锚细胞是看不见的，所以它们需要某种信号来告诉它们该打破哪里。2009年舍伍德等人曾发现，锚细胞需要通过细胞外的netrin信号来确定自己的侵袭方向。
发表于2014年8月25日的《Journal of Cell biology》杂志上的一项研究中，该研究团队发现，netrin受体在细胞膜上来回抗原抗体，“搜寻”指引方向的netrin信号。
研究人员对线虫锚细胞的侵袭过程进行了显微延时成像。他们看到，当netrin生产被阻断时，锚细胞上的netrin受体会间歇性的在细胞膜各处成簇、分散和重组。这样的受体簇就位于肌动蛋白纤维旁边，这种纤维可以帮助细胞改变形态，形成侵袭所需的突出结构。
有了这些受体组成的探测系统，锚细胞就不需要转来转去地找信号了。一旦受体定位了netrin信号，它们就会在离信号zui近的细胞膜区域中稳定下来。
数十年来，人们一直认为细胞定向系统是被动应答信号的。这项研究改写了这个老观点，研究人员指出，锚细胞并不是被动应答netrin信号的，它们一直在主动的寻找信号。
此前，人们曾在一些zui致命的癌症中发现，netrin能促进癌细胞侵袭。研究人员指出，可以通过netrin探测系统，阻止癌细胞进入血液或淋巴系统，避免癌症在机体中扩散。研究人员称，下一步将筛选药物，尝试阻断癌细胞侵袭的探测系统。
在神经系统布线过程中，netrin也起到了关键的作用，引导神经细胞生长并形成连接。中枢神经系统的再生能力很有限，不过netrin探测器也许可以帮助神经细胞再生，帮助人们治疗帕金森症和渐冻人症，促进受损脊髓恢复康复。
就像一个吹烟圈形成的那样，类似于一个微型的肌肉夹的“收缩环”是酵母细胞分裂为二。细胞的分裂使生命成为可能，但这个基本过程中的实际机制已被证明难以牵制。
耶鲁大学和哥伦比亚大学的研究人员zui近在计算机上，通过积累足够的信息来模拟收缩环的形成和收缩，揭示了这个奥秘。

At some point in the development of a nematode, a special cell called an anchor cell breaks a dense sheetlike membrane that separates the neuteri's uterus from the vulva and opens up the nematode's antigen-antibody tract. Anchor cells are invisible, so they need some sort of signal to l them where to break. In 2009, Sherwood et al. Found that the anchoring cells need to determine their direction of invasion by extracellular signals of netrin.
In a study published in the August 25, 2014 issue of the Journal of Cell biology, the team found that netrin receptors cross-hatch antigen antibodies on the cell membrane, "searching" for netrin signaling.
The researchers conducted microscopic time-lapse imaging of the invasion of nematode anchors. They observed that when netrin production was blocked, the netrin receptors on the anchors would cluster, disperse and recombine intermittently throughout the cell membrane. This receptor cluster is located next to the actin fibers, which help cells change their morphology and form prominent structures needed for invasion.
With these receptor-based detection systems, anchor cells do not need to turn around to find the signal. Once the receptor has localized the netrin signal, they stabilize in the cell membrane closest to the signal.
For decades, people have always believed that the cell-oriented system is a passive response signal. The study rephrasing this old view, the researchers pointed out that anchor cells are not passive response netrin signal, they have been actively looking for the signal.
Earlier, it was found in some of the most deadly cancer, netrin can promote cancer invasion. The researchers pointed out that netrin detection system, to prevent cancer cells into the blood or lymphatic system, to prevent the spread of cancer in the body. The researchers said the next step would be screening drugs to try to block detection of cancer cells.
Netrin also plays a key role in the wiring of the nervous system, guiding nerve cells to grow and form connections. The regenerative capacity of the central nervous system is limited, but the netrin detector may help regenerate nerve cells, help people treat Parkinson's disease and freeze-thaw disease, and promote the recovery of damaged spinal cord.
Like a puff of smoke, a "contraction ring" resembling a miniature muscle clip splits yeast cells into two. Cell division makes life possible, but the actual mechanisms in this basic process have proven difficult to pin down.
Researchers at Yale and Columbia recently revealed the mystery on a computer by accumulating enough information to simulate the formation and contraction of a constriction ring.