显微镜知识库

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！

3D rendering of a mouse beta cell with mitochondria (blue), insulin SGs (orange), microtubules (red), nucleus (yellow), and plasma membrane (transparent).

High-Pressure Freezing Protocols for Ultrastructural 3D EM

High pressure freezing (HPF) can help preserve hydrated cells and tissues close to their biological state at the moment of immobilization, supporting more reliable ultrastructural interpretation than…

Ultramicrotome UC Enuity in Practice: Stable 15 nm Sections at ZFE

After using the UCT and UC6 ultramicrotomes, Claudia Mayrhofer calls UC Enuity a leap in stability—so robust that vibrations and temperature shifts don’t spoil sections, even with multiple users. Auto…

超薄切片技术电子书：定位、修块& 对刀

超薄切片技术正经历日新月异的发展，当今的显微镜系统对高质量切片、精准定位以及可重复的工作流程提出了更高要求。这本电子书整合了专家应用指南、自动化方法及实操指导，旨在帮助从初学者到资深镜检人员的每一位用户，在电镜、光电联用及体电镜工作流程中，获得一致且可靠的超薄切片。

Foraminifera (Ammonia confertitesta) labeled with membrane-permeable calcein, high-pressure frozen in salt water using EM ICE. The sample was cryo-planed and targeted with the M205 on the Cryo-Fluo Enuity, then transferred under cryo conditions to the Cryo-Stellaris for widefield and confocal imaging, revealing details of the staining pattern. Image courtesy: David Evans, University of Southampton.

High-Pressure Freezing for Organoids: Cryo CLEM & FIB Lift Out

Master cryo EM workflow steps for challenging 3D samples: when to choose HPF vs. plunge freezing, reproducible blotting/ice control, contamination aware transfers, Cryo CLEM 3D targeting in organoids,…

Electron microscope (EM) image of a cross section of C. elegans (roundworm). Courtesy of T. Müller-Reichert, MPI-CBG, Dresden, Germany and K. McDonald, University of California, Berkeley, USA.

高压冷冻简介

水是细胞最主要的组成部分，因此对于维持细胞超微结构至关重要。目前，冷冻固定是固定细胞成分，而不导致其显著结构变化的唯一途径。现阶段有两种常见的方法：投入冷冻与高压冷冻固定。

TEM micrographs of polymer sections. Left: Poly(styrene)-b-poly(isoprene). Right: Poly(styrene)-b-poly(methyl methacrylate).

聚合物透射电镜分析用超薄切片技术

本文全面展示了徕卡UC Enuity超薄切片机在聚合物样品超薄切片制备中的优异表现，无论是常温还是低温环境，它都能提供理想的分析样本。文中展示的高分辨率二维及三维TEM图像，有力印证了该仪器在聚合物结构分析领域，对于获得精确、可重复的样品制备结果不可或缺。

Final Segmentation of organelles in Trichomonas species. Magenta – costa, light blue – hydrogenosomes, turquoise – ER, red – vacuoles, yellow – axostyle, green – Golgi apparatus. Sample courtesy of Isabelle Guerin-Bonne, Low Kay En, Electron Microscopy Unit, Yong Loo Lin School of Medicine, National University of Singapore. Scale bar: 1 µm.

体电子显微学与人工智能图像分析

该文章详细阐述了利用体电子显微镜技术 (volume-SEM) 结合人工智能辅助图像分析，对生物组织进行三维研究的工作流程。研究的重点是一种名为毛滴虫的原生动物，这是一种有鞭毛的寄生虫，是导致性传播感染——滴虫病的病原体。为了可视化其复杂的内部结构，研究人员采用了体电子显微镜技术，通过对一系列超薄切片进行成像来重建三维模型。

Trichomonas parasite in mouse gut, rOTO Embedding and serial sections for array tomography imaging. Sample courtesy Isabelle Guerin-Bonne, Low Kay En, Electron Microscopy Unit, Yong loo Lin School of Medicine, National University of Singapore

用于三维生物成像的集成连续切片与冷冻电镜工作流程

本场网络研讨会探讨了集成化工具如何支持从样品制备到图像分析的电子显微镜全流程。专家Andreia Pinto博士、Adrian Boey博士与Hoyin Lai博士将介绍UC Enuity超薄切片机和Aivia图像分析平台，并演示这些工具如何同时适用于常温与低温实验环境。会议内容包含阵列断层成像、基于深度学习的图像分割、以及生物成像中cryo-lift-out工作流程的实际案例解析。

SEM image of the full Li-NMC electrode sample, showing the two porous layers and the metal film at the center of the structure.

通过Cryo-EM(冷冻电镜)和 CryoFIB(冷冻聚焦离子束）揭示钠电池退化机制

探索低温电镜和聚焦离子束技术如何揭示钠电池界面的内在结构。本次研讨会将提出基于隔膜渗透（而非枝晶生长）的新型退化模型，并解析电解液溶剂如何影响界面稳定性与电池性能。

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