Filter articles
标签
产品
Loading...
![[Translate to chinese:] Dronpa chromophore [Translate to chinese:] Dronpa chromophore](/fileadmin/_processed_/f/d/csm_Dronpa_chromophore_f20b658eed.jpg)
光激活、光转化和光控开关荧光蛋白
荧光蛋白(FP)如GFP、YFP或DsRed都是可视化观察活细胞中细胞组分的强大工具。尽管如此,目前仍然会有传统FP达到极限的情形发生。普通FP无法观察特定兴趣蛋白中专有、空间有限的蛋白质群体,因为它们在整个细胞中都有表达。此时,光激活、光转化和光控开关荧光蛋白就登上了舞台。荧光套件中的成员可以从非荧光状态激活,可以改变发射光谱,甚至可以逆转式地“开启和关闭”。借助这些“光学荧光笔”,研究人员可以…
Loading...

Rodent and Small-Animal Surgery
Learn how you can perform rodent (mouse, rat, hamster) and small-animal surgery efficiently with a microscope for developmental biology and medical research applications by reading this article.
Loading...
![[Translate to chinese:] Left: Tissue cells marked with an immunolabel (FITC) illuminated with wide-band UV excitation. Note the tissue structure with blue autofluorescence. Right: Same tissue and same immunostaining with FITC label illuminated with epi-il [Translate to chinese:] Left: Tissue cells marked with an immunolabel (FITC) illuminated with wide-band UV excitation. Note the tissue structure with blue autofluorescence. Right: Same tissue and same immunostaining with FITC label illuminated with epi-illumination using narrow-band blue (490 nm) light. Note the increased image contrast (Ploem, 1967)](/fileadmin/_processed_/c/2/csm_Ploem_Figure_5_Autofluorescence_a_b_fbca553e26.png)
Milestones in Incident Light Fluorescence Microscopy
Since the middle of the last century, fluorescence microscopy developed into a bio scientific tool with one of the biggest impacts on our understanding of life. Watching cells and proteins with the…
Loading...
![[Translate to chinese:] Fluorescence stereo microscope image of anesthetized Mediterranean fruit flies recorded with a M205 stereo microscope. [Translate to chinese:] Fluorescence stereo microscope image of anesthetized Mediterranean fruit flies recorded with a M205 stereo microscope.](/fileadmin/_processed_/1/1/csm_Mediterranean_fruit_flies_recorded_with_M205_FA_1465b7af49.jpg)
研究果蝇(黑腹果蝇Drosophila melanogaster)
由于每个实验室的需求可能会有很大的差异,本文展示了科学家和技术人员研究果蝇并使用不同显微镜设置的的实例。此外,基于不同果蝇实验室的经验介绍了推荐的工作流程。本文可以作为建立或扩展果蝇实验室时的参考或指南。
Loading...
![[Translate to chinese:] C. elegans [Translate to chinese:] C. elegans](/fileadmin/_processed_/6/4/csm_C_elegans_6192d4aba6.jpg)
研究秀丽隐杆线虫(C. elegans)
对于在研究实验室或教室中使用秀丽隐杆线虫(C. elegans)的科学家、技术人员和教师,本报告旨在提供有用的信息,以帮助改进他们的日常工作。其目的是使拾取虫体、转基因、RNA干扰、筛选和功能成像等工作步骤更加高效。本报告还详细介绍了配置研究虫实验室或生物教室/教学实验室的各种可能性,并解释了有关研究虫体方法的内容。
Loading...
![[Translate to chinese:] Acousto-optics, sketch [Translate to chinese:] Acousto-optics, sketch](/fileadmin/_processed_/f/5/csm_Acousto-optics_sketch_01_7fe52a04bf.jpg)
声光调制在全光谱型激光共聚焦显微镜系统的应用
荧光最显著的特征是照射光(激发光)和检测光(发射光)颜色之间的偏移,称为斯托克斯位移。因此,在荧光成像中,不仅要将激发光和发射光的相应波长过滤出来,还需要将激发光从发射光中分离。过去,通常用平面光学元件,包括灰色或彩色滤光片和反射镜进行滤光和分光。虽然有多种平面光学元件可供使用,但固定的规格和低切换效率使其在使用上具有局限性,并且采用不同角度或梯度的涂层作为激发光和发射光的调谐方法也被证实并不可行…
Loading...
![[Translate to chinese:] Center a fluorescence bulb. [Translate to chinese:] Center a fluorescence bulb.](/fileadmin/_processed_/b/1/csm_Center_Fluorescence_Bulb_02_aa5ac6e7e0.jpg)
视频教程: 如何调节荧光光源的灯泡位置
荧光激发的传统光源是带汞灯的荧光灯管。实现明亮均匀激发的前提条件是灯泡在灯罩内正确对中和对齐。
本视频教程介绍了一种简易的方法,用于调节荧光灯管中的汞灯的位置。
Loading...
![[Translate to chinese:] Sub-Femtolitre volume_Fluorescence correlation spectroscopy (FCS) [Translate to chinese:] Sub-Femtolitre volume_Fluorescence correlation spectroscopy (FCS)](/fileadmin/_processed_/f/4/csm_Fluorescence_Correlation_Spectroscopy_FCS_sub-emtolitre_volume_f97c5a06e3.jpg)
荧光相关光谱(FCS)
荧光相关光谱学(FCS)通过测量亚飞升体积内荧光强度的波动来检测扩散时间、分子数量或荧光标记分子的暗态等参数。这项技术是在20世纪70年代初期由瓦特·韦伯(Watt Webb)和鲁道夫·里格勒(Rudolf Rigler)独立开发的。