Science Lab

Science Lab

Science Lab

Bem-vindo ao portal de conhecimento da Leica Microsystems. Você encontrará pesquisas científicas e material didático sobre o tema microscopia. O portal oferece suporte a iniciantes, profissionais experientes e cientistas em seus trabalhos e experimentos diários. Explore tutoriais interativos e notas de aplicação, descubra os fundamentos da microscopia, bem como as tecnologias de ponta. Faça parte da comunidade do Science Lab e compartilhe sua experiência.
UC Enuity with Diatome diamond knife.

Mastering Polymer Sectioning with Helmut Gnaegi

When it comes to ultramicrotomy, few names carry the weight of Helmut Gnaegi. As co-founder of Diatome, a global leader in diamond knife technology, Helmut has spent decades refining the art and…
C. elegans embedded in Lowicryl® HM20; pharynx showing red fluorescence (mCherry). The overview shows a front view onto the resin capsule formed by the bottom of a flow-through chamber of the EM AFS2. The capsule was pretrimmed manually. The blockface was trimmed automatically using the AutoTrim function of UC Enuity guided by fluorescence of the worm. Edge length of both squares in relation to the images is 250 µm.

How Fluorescence Guides Sectioning of Resin-embedded EM Samples

Electron microscopes, including transmission electron microscopes (TEM) and scanning electron microscopes (SEM), are widely utilized to gain detailed structural information about biological samples or…
C. elegans nematode embedded in Epon epoxy resin, contrasted with osmium tetroxide. The resin block was pretrimmed by hand. Scale bar: 500 µm.

How to Save Time and Samples by Automated Ultramicrotomy

This article describes how 3D micro-CT data of a resin-embedded electron microscopy sample can be used to trim the specimen down to a defined target plane prior to sectioning. The interactive and…
Complete camera overview of EM grid recorded with 3 channels. Inserts displaying the positions, where superresolved 3D confocal images were recorded. 3D renderings of these positions are shown in the zoomed inserts. Fluorescence channels (nuclei by Hoechst, blue; mitochondria by MitoTracker Green, green; lipid Droplets by Bodipy and Crimson Beads, red). Width of a grid square is 90 ?m, width of a grid bar is 35 ?m. Samples kindly provided by Ievgeniia Zagoriy, Mahamid-Group, EMBL Heidelberg, Germany.

From Bench to Beam: A Complete Correlative Cryo Light Microscopy Workflow

In the webinar entitled "A Multimodal Vitreous Crusade, a Cryo Correlative Workflow from Bench to Beam" a team of experts discusses the exciting world of correlative workflows for structural biology…
Block-face created by automatic trimming under fluorescence. Mammalian cells of interest, stained with CellTrackerTM Green are visualized within the block-face using the UC Enuity equipped with the stereo microscope M205 FA. In the background a carbon finder grid in black is visible. All samples in the article are created by Felix Gaedke, PhD, CECAD, Cologne, Germany.

How to Automatically Obtain Fluorescent Cells of Interest in a Block-face

Block-face created by automatic trimming under fluorescence. Mammalian cells of interest, stained with CellTrackerTM Green are visualized within the block-face using the UC Enuity equipped with the…
UC Enuity

Improve Your Ultramicrotomy Workflow with Automated Sectioning

Discover advanced digital ultramicrotomy tools for fast and accurate automated sectioning. Learn about autoalignment, and efficient sample trimming leveraging 3D µCT data. See application examples…

Workflow Solutions for Sample Preparation Methods for Material Science

This brochure presents and explains appropriate workflow solutions for the most frequently required sample preparation methods for material science samples.
Camera image during auto alignment. The feedback lines indicate if the correct edges in the image are detected. Green: Vertical center line; Magenta: Upper edge of the light gap; White: Lower edge of the light gap (not visible here, falling together with red line); Red: Knife edge; Blue: Left and right edge of the block face being automatically detected.

Automatic Alignment of Sample and Knife for High Sectioning Quality

Automatic alignment of sample and knife on the ultramicrotome UC Enuity, enabling even untrained users to create ultrathin sections with reduced risk of losing precious sections.
Section ribbons with increasing section thickness - silver to purple ending in blue sections.

High Quality Sectioning in Ultramicrotomy

Discover the significance of achieving high-quality uniform sections with ultramicrotomy for precise imaging in electron microscopy.
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