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Racked tips, 200 μL max

10个机架中的960个LTS提示

公司名称: Mettler-Toledo International
产品编号: RT-L200F
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Expression and Analysis of Flow-regulated Ion Channels in Xenopus Oocytes
Author:
Date:
2017-04-20
[Abstract]  Mechanically-gated ion channels play key roles in mechanotransduction, a process that translates physical forces into biological signals. Epithelial and endothelial cells are exposed to laminar shear stress (LSS), a tangential force exerted by flowing fluids against the wall of vessels and epithelia. The protocol outlined herein has been used to examine the response of ion channels expressed in Xenopus oocytes to LSS (Hoger et al., 2002; Carattino et al., 2004; Shi et al., 2006). The Xenopus oocyte is a reliable system that allows for the ... [摘要]  机械门控离子通道在机械传导中起关键作用,这是将物理力量转化为生物信号的过程。 上皮细胞和内皮细胞暴露于层流剪切应力(LSS),这是通过流体流向血管壁和上皮细胞壁所施加的切向力。 本文概述的方案已用于检查在非洲爪蟾卵母细胞中表达的离子通道对LSS的反应(Hoger等,2002; Carattino等,2004; Shi等,2006)。 非洲爪蟾卵母细胞是允许离子通道和调节蛋白的表达和化学修饰的可靠系统(George等,1989; Palmer等,1990; Sheng等,2001; Carattino等,2003)。 因此,该技术适用于研究允许流激活通道响应LSS的分子机制。
【背景】排列血管的泌尿道和内皮细胞的上皮细胞经受移动流体引起的机械力。这些力是层流剪切应力(LSS),与管状结构壁相切的摩擦力,以及垂直于流动方向的周向拉伸。令人信服的证据表明,LSS是响应肾和血管管状结构的流动变化而观察到的生理反应的主要决定因素(Satlin等,2001; Liu等,2003; Weinbaum等,2010) 。在这些设置中,离子通道具有将流体剪切应力传递到生物信号中的重要作用(Ranade等,2015)。例如,在肾的远端肾单位中,Na +再吸收和K ...

Sulforhodamine B (SRB) Assay in Cell Culture to Investigate Cell Proliferation
Author:
Date:
2016-11-05
[Abstract]  The SRB assay has been used since its development in 1990 (Skehan et al., 1990) to inexpensively conduct various screening assays to investigate cytotoxicity in cell based studies (Vichai and Kirtikara, 2006). This method relies on the property of SRB, which binds stoichiometrically to proteins under mild acidic conditions and then can be extracted using basic conditions; thus, the amount of bound dye can be used as a proxy for cell mass, which can then be extrapolated to measure cell proliferation.

The protocol can be divided into four main steps: preparation of ...
[摘要]   Limonium 已知有性和无融合生殖(通过种子的无性繁殖)繁殖模式。在这里,我们提出解剖协议为胚珠的发芽。使用微分干涉对比(DIC)显微镜。该协议允许更好地处理胚珠,并提供优于早期技术,特别是在较大胚珠的某些优势。这种方法还能够观察到完整胚珠中的减数分裂和胚囊发育,以及容易检测到区别性和无序性发育的事件。

[背景] 发生在胚珠发育期间,有必要细胞学检查胚珠。这项研究可以涉及显微镜观察石蜡或树脂包埋,切片材料或清除的器官。在D'Amato(1940; 1949)的先驱作品中公开了对性和无融合生殖物种中胚珠和胚囊发育的第一次细胞学研究。在这些作品中,花使用Karpechenko的方法固定,包埋在石蜡中,切片并用Heidenhain的铁苏木精染色,其染色质和染色体在细胞核中染色。使用这些方法的花芽切片可导致由于单个细胞的部分破坏结构完整性而具有差质量的制备物。更容易的选择是清除福尔马林:乙酸:乙醇固定的器官并用纯的Mayer's hemalum染色(Wallis,1957; Stelly等人,1984)。这种技术需要少得多的时间和劳动,特别是对于通常在卵巢中形成小胚珠的物种,这是 Limonium ...

ELISA Measurement of Mouse IL-2
Author:
Date:
2012-01-05
[Abstract]  Interleukin-2 (IL-2) is a cytokine secreted by T cells that is essential for immune system activation. This protocol is routinely used for quantification of IL-2 concentration in the supernant of cultured lymphocytes under various stimulations and co-culturing conditions. Upon slightly modification and optimization, this protocol can also be adapted to quantitatively measure other secreted proteins and bio-molecules.
[摘要]  白细胞介素-2(IL-2)是由免疫系统激活所必需的T细胞分泌的细胞因子。 该方案常规用于在各种刺激和共培养条件下定量培养的淋巴细胞的上清液中的IL-2浓度。 在稍微修改和优化后,该方案也可以适用于定量测量其他分泌的蛋白质和生物分子

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