Science Lab

Science Lab

Science Lab

ライカマイクロシステムズのナレッジポータルでは、顕微鏡の基礎から最先端技術まで、幅広い情報を提供しています。初心者から熟練者、研究者、医師の皆様まで、日々の研究や実験に役立つ内容となっております。チュートリアルやアプリケーションノートを活用し、学びながら探究心を刺激してください。さらに、コミュニティに参加することで、知見を共有し、新たな発見へとつなげましょう。お気軽に参加いただき、互いの専門知識を深め合う場としてご活用ください。
Time-lapse imaging of calcium in cells using the ratiometric calcium indicator Fura-2.

Ratiometric Imaging and Analysis of Ion Concentration in Cells

Many cellular functions depend on the dynamic balance of ions, electric potentials, and pH between the cytosol and surrounding extracellular space. Changes in these values affect cellular function.…
Ribbon diagram of a donor (D) and acceptor (A) molecule which participate in FRET (Förster resonance energy transfer).

What is FRET with FLIM or as it is usually known FLIM-FRET?

Förster resonance energy transfer (FRET) is a well-established fluorescence-based technique which is used to study molecular interactions. It is useful for the analysis of protein-DNA and…
Example of calibrating a microscope at a higher magnification value using a stage micrometer.

Microscope Calibration for Measurements: Why and How You Should Do It

Microscope calibration ensures accurate and consistent measurements for inspection, quality control (QC), failure analysis, and research and development (R&D). Calibration steps are described in this…
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.

Brief Introduction to High-Pressure Freezing for Cryo-Fixation

Preparation of biological specimens for electron microscopy (EM) often requires cryo-fixation which does not introduce significant structural alterations of cellular constituents. A common method used…
Area of a printed circuit board (PCB) which was imaged with extended depth of field (EDOF) using digital microscopy.

顕微鏡を知る：被写界深度

顕微鏡において被写界深度は、凹凸の変化が⼤きい構造を持つ試料をピントがあったシャープに観察・撮像するために重要なパラメータです。被写界深度は、開⼝数、解像度、倍率の相関関係によって決定され、解像度とパラメータは反⽐例の関係にあります。被写界深度と解像度のバランスが最適になるように調整することができる顕微鏡もあります。
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.

What is Empty Magnification and How can Users Avoid it

The phenomenon of “empty magnification”, which can occur while using an optical, light, or digital microscope, and how it can be avoided is explained in this article. The performance of an optical…
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 STED microscope from Leica Microsystems. It gives an…
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).

Understanding Clearly the Magnification of Microscopy

To help users better understand the magnification of microscopy and how to determine the useful range of magnification values for digital microscopes, this article provides helpful guidelines.
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