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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!
Multicolor TauSTED Xtend 775 for Cell Biology applications that require nanoscopy resolution for multiple cellular components. Cells showing vimentin fibrils (AF 594), actin network (ATTO 647N), and nuclear pore basket (CF 680R). Sample courtesy of Brigitte Bergner, Mariano Gonzales Pisfil, Steffen Dietzel, Core Facility Bioimaging, Biomedical Center, Ludwig-Maximilians-University, Munich, Germany.

The Guide to STED Sample Preparation

This guide is intended to help users optimize sample preparation for stimulated emission depletion (STED) nanoscopy, specifically when using the TCS SP8 STED 3X nanoscope from Leica Microsystems. It…
An 8-color spectral unmixing result from a hyperspectral SRS (stimulated Raman scattering) dataset, showing the biochemically distinct structures of a fresh, untreated apple slice.

How to Prepare Samples for Stimulated Raman Scattering (SRS) imaging

Find here guidelines for how to prepare samples for stimulated Raman scattering (SRS), acquire images, analyze data, and develop suitable workflows. SRS spectroscopic imaging is also known as SRS…
Image of a Siemens star, where the diameter of the 1st black line circle is 10 mm and the 2nd is 20 mm, taken via an eyepiece of a M205 A stereo microscope. The rectangles represent the field of view (FOV) of a Leica digital camera when installed with various C-mounts (red 0.32x, blue 0.5x, green 0.63x).

30000:1放大率到底意味着什么?

关于光学显微镜性能的一个重要标准是放大率。本报告将为数字显微镜用户提供有用的指南,以确定放大率值的有用范围。
[Translate to chinese:] Molecular structure of the green fluorescent protein (GFP)

荧光蛋白简介

本文概述了荧光蛋白及其光谱特性。随着 20 世纪 50 年代末荧光蛋白的发现,荧光显微技术发生了巨大变化。它始于 O. Shimomura 和来自水母(Aequorea victoria)的绿色荧光蛋白(GFP)[1]。后来出现了数百种 GFP…
Micrograph of dinoflagellate cells. Scale bar = 1 µm.

How Marine Microorganism Analysis can be Improved with High-pressure Freezing

In this application example we showcase the use of EM-Sample preparation with high pressure freezing, freeze substiturion and ultramicrotomy for marine biology focusing on ultrastructural analysis of…
Patch pipette touching a murine hippocampal neuron. Image courtesy of A. Aguado, Ruhr University Bochum, Germany.

什么是膜片钳技术?

离子通道的生理学一直是神经科学家感兴趣的一个重要话题。诞生于1970年代的膜片钳技术开启了电生理学家的新时代。它不仅可以对整个细胞进行高分辨率电流记录,还可以对切下的细胞膜片进行高分辨率电流记录。甚至可以研究单通道事件。然而,由于需要复杂且高灵敏的设备,广泛的生物学背景和高水平的实验技能,电生理学仍然是最具挑战性的实验室方法之一。
[Translate to chinese:] Neurons imaged with DIC contrast.

微分干涉对比(DIC)显微镜

本文阐释了在使用显微镜对未染色透明生物样本进行成像时,微分干涉对比法(DIC)为何是明场照明的绝佳方案。
[Translate to chinese:] Image of MDCK (Madin-Darby canine kidney) cells taken with phase contrast.

相差和显微镜

相差是一种光学显微镜技术,用于增加未染色样本的对比度。未染色样本的结构,例如活细胞或其细胞器,在明场照明下观察时可能显得模糊,甚至变得透明。
Microscope image of cultured cells at the bottom of a dish.

如何对细胞培养进行快速正确的检测

本文介绍了对培养贴壁细胞系进行传代的一般工作流程及步骤说明。哺乳类细胞体外培养是在癌症、药物开发、组织工程、干细胞、疾病细胞和分子生物学等生物医学研究领域进行临床和药物研究的重要模型。要想成功维持细胞系,需要通过控制生长条件来维持细胞生理和表型的稳定性。定期监测细胞生长,对细胞进行传代培养以确保连续性。
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