Leica Microsystems: 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！

Automated Laser Microdissection for Proteome Analysis

组织中的精密空间蛋白质组学信息

尽管可使用基于成像和质谱的方法进行空间蛋白质组学研究，但是图像与单细胞分辨率蛋白丰度测量值的关联仍然是个巨大的挑战。最近引入的一种方法，深层视觉蛋白质组学（DVP），将细胞表型的人工智能图像分析与自动化的单细胞或单核激光显微切割及超高灵敏度的质谱分析结合在了一起。DVP在保留空间背景的同时，将蛋白丰度与复杂的细胞或亚细胞表型关联在一起。

[Translate to chinese:] These images show the microstructure of a hard metal with 10% cobalt which is used for heavy-duty tools. The large increase in magnification of the right image (compared to the left) has a risk of being outside the useful range or, in other words, empty magnification.

当心“无效”放大率

在一个最简化的情况，光学显微镜由一个靠近标本的透镜（物镜）和一个靠近眼睛的透镜（目镜）组成。显微镜放大率是两个显微镜透镜系数的乘积。比如，40倍物镜和10倍目镜可以得到400倍放大率。

Developing embryos of different species at different stages during the elongation of their posterior body axis, from left to right in developmental time. The labelled regions in red depict a region of undifferentiated cells called the tailbud, with the corresponding region generated from that tissue shaded in grey. Upper row: lamprey; middle row: catshark; bottom row, zebrafish. This figure has been adapted from the following publication: Steventon, B., Duarte, F., Lagadec, R., Mazan, S., Nicolas, J.-F., & Hirsinger, E. (2016). Species tailoured contribution of volumetric growth and tissue convergence to posterior body elongation in vertebrates. Development, 2016. 143(10):1732-41

How to Study Gene Regulatory Networks in Embryonic Development

Join Dr. Andrea Boni by attending this on-demand webinar to explore how light-sheet microscopy revolutionizes developmental biology. This advanced imaging technique allows for high-speed, volumetric…

[Translate to chinese:] Multiplexed Cell DIVE imaging of Adult Human Alzheimer’s brain tissue section demonstrating expression of markers specific to astrocytes (GFAP, S100B), microglia (TMEM119, IBA1), AD-associated markers (p-Tau217, β-amyloid) and immune cells such as CD11b+, CD163+, CD4+, and HLA-DRA+, clustered around the β-amyloid plaques.

Spatial Analysis of Neuroimmune Interactions in Alzheimer’s Disease

Alzheimer’s disease (AD) is a complex neurodegenerative disorder characterized by neurofibrillary tangles, β-amyloid plaques, and neuroinflammation. These dysfunctions trigger or are exacerbated by…

Image of a tartaric-acid crystal taken with polarization microscopy. Tartaric acid, a diprotic, aldaric carboxylic acid, is a naturally occurring organic compound notably found in grapes. Tartaric_acids_polarization.jpg

偏振光显微观察

偏光显微镜通常应用于材料科学和地质学领域，根据矿物的折射特性和颜色来识别矿物。在生物学中，偏光显微镜通常用于晶体等双折射结构的识别或成像，或用于植物细胞壁中纤维素和淀粉粒的成像。

Pancreatic Ductal Adenocarcinoma imaged with Cell DIVE. Analysis done by Aivia.

What is spatial biology, and how can researchers leverage its tools to meet the growing demands of biological questions in the post-omics era? This article provides a brief overview of spatial biology…

Image of a 12-μm thick brain section, which was stained with Toluidin blue, before dissection. It was taken with a microscope using a 63x objective.

An Introduction to Laser Microdissection

The heterogeneity of histological and biological specimens often requires isolation of specific single cells or cell groups from surrounding tissue before molecular biology analysis can be carried…

[Translate to chinese:] GLP-1 and PYY localized to distinct secretory pools in L-cells.

前沿成像技术用于 GPCR 信号传导

通过这个按需网络研讨会，提升您的药理研究，了解 GPCR 信号传导，并探索旨在理解 GPCR 信号如何转化为细胞和生理反应的尖端成像技术。发现领先的研究，扩展我们对这些关键通路的认识，以寻找新的药物发现途径。

Stripe assay performed on a THUNDER Imager Cell. Courtesy of Maria Carrasquero Ordaz, University of Oxford.

Revealing Neuronal Migration’s Molecular Secrets

Different approaches can be used to investigate neuronal migration to their niche in the developing brain. In this webinar, experts from The University of Oxford present the microscopy tools and…