Science Lab

Science Lab

Science Lab

The knowledge portal of Leica Microsystems offers scientific research and teaching material on the subjects of microscopy. The content is designed to support beginners, experienced practitioners and scientists alike in their everyday work and experiments. Explore interactive tutorials and application notes, discover the basics of microscopy as well as high-end technologies – become part of the Science Lab community and share your expertise!

Advancing Cellular Ultrastructure Research

Freeze-fracture and freeze-etching are useful tools for studying flexible membrane-associated structures such as tight junctions or the enteric glycocalyx. Freeze-fracture and etching are two…
Cryo FIB lamella - Overlay of SEM and confocal fluorescence image. Target structure in yeast cells (nuclear pore proteine Nup159-Atg8-split Venus, red) marked by an arrow. Scale bar: 5 µm. Alegretti et al.,  Nature 586, 796-800 (2020).

Targeting Active Recycling Nuclear Pore Complexes using Cryo Confocal Microscopy

In this article, how cryo light microscopy and, in particular cryo confocal microscopy, is used to improve the reliability of cryo EM workflows is described. The quality of the EM grids and samples is…

3-Dimensional Imaging of Macroscopic Defects in Aluminum Alloys

The investigation of macroscale defects in aluminum (Al) alloys with a rapid 3-dimensional (3D) imaging approach is described in this report. Aluminum (Al) alloys play an important role in the…

Introduction to Ultramicrotomy

When studying samples, to visualize their fine structure with nanometer scale resolution, most often electron microscopy is used. There are 2 types: scanning electron microscopy (SEM) which images the…

High Resolution Array Tomography with Automated Serial Sectioning

The optimization of high resolution, 3-dimensional (3D), sub-cellular structure analysis with array tomography using an automated serial sectioning solution, achieving a high section density on the…

Visualization of DNA Molecules

Precise low angle rotary shadowing with heavy metals (like platinum) can be used in transmission electron microscopy (TEM) to observe molecular details of objects previously absorbed on a thin, low…

Picea abies (L.) KARST - Sample Preparation for TEM

Application Note for Leica EM AMW - Plants (5-years old) were grown in pots filled with soil and kept in greenhouse conditions. Five weeks before harvesting the plants were transferred into growth…

Maple (Acer saccharum) Leaves - High Pressure Freezing and Freeze Substitution for TEM

Application Note for Leica EM HPM100 - Leaves were immersed in hexadecene and placed under a gentle (0.3 bar) vacuum for 10 minutes to evacuate the internal air spaces. The leaves were then trimmed to…

Removal of Surface Layers - Sample Preparation for SEM and TEM

Application Note for Leica EM RES102 - Sometimes it is necessary to remove surface layers to gain access to the real surface structure. That can be a native oxide, or layers coming from the…
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