显微镜科学与教学知识中心

显微镜科学与教学知识中心

显微镜科学与教学知识中心

徕卡显微系统的知识库提供有关显微镜学科的科学研究和教学材料。内容旨在对显微镜初学者、有经验的显微镜操作实践者和使用显微镜的科学家在他们的日常工作和实验有所帮助。这里有探索交互式教程和应用笔记,你可以找到你需要的显微镜的基础知识以及前沿技术——快来加入徕卡显微知识社区,分享您的专业知识!
[Translate to chinese:]

宽场显微镜简介

‘宽场显微镜’是最基本的显微镜技术之一。其根本上是将整个感兴趣的样本暴露于光源下,由观察者或摄像头(也可连接到计算机显示器)获得图像的技术。
[Translate to chinese:] Dronpa chromophore

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…
[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)

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…
Mar 06, 2017
故事
Milestones in Incident Light Fluorescence Microscopy
[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)

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…
[Translate to chinese:] HeLa cells stimulated with LPS. Image has been subjected to deconvolution.

显微镜下的慢性炎症

在慢性炎症的过程中,身体的某些部位会反复发炎。许多人类疾病都是如此。在宽场光学显微镜的帮助下,可以对从细胞水平到整个生物体的潜在过程进行检查。本文介绍了几种宽场显微镜应用,如免疫荧光、活细胞成像、组织学和比率分析,以深入了解慢性炎症的发展、相关疾病及其治疗。
Gene editing with Cas9

Gene Editing with CRISPR/Cas9 - Breakthrough in Genome Engineering

The CRISPR/Cas9 system is one of several different bacterial systems for defense against viral attacks. It consists of two main components. One is a small piece of RNA which binds to the viral target…
[Translate to chinese:] C. elegans

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。
Infinity port

无限远光学系统

“无限远光学”这一概念是指在显微镜的物镜和镜筒透镜之间具有平行光线的光束路径。平面光学元件可以进入到这个“无限远空间”中,而不影响成像,这对于利用DIC或荧光等对比度方法至关重要。 现代显微技术需要在无限远光路中添加多种光学仪器,如光源或激光装置。满足这一需求的不同方法已经出现,本文对其进行了描述。

荧光显微镜光学滤光器手册

荧光显微镜和其他基于光的应用需要具有严格光谱和物理特性的光学滤光器。这些特性通常是特定于应用的,适合并且最佳的光学器件在另一种应用中可能不适用且效果不佳。
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