Science Lab

Science Lab

Science Lab

Learn. Share. Contribute. The knowledge portal of Leica Microsystems. Find scientific research and teaching material on the subject of microscopy. The portal supports 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.
Fixed patient-derived neuroendocrine tumor organoids labeled with DAPI (cyan) and phalloidin (magenta), imaged using Viventis SCAPE; scale bar 50μm. Courtesy of Marina Cuenca and Heleen Jungen (Dayton lab), EMBL Barcelona.

What’s the Best Organoid Imaging Approach for Early Drug Discovery?

Organoids and other complex in vitro models (CIVMs) are becoming increasingly important in early drug discovery and translational research, driven by the need for more predictive, human-relevant data…
Large field of view (FOV) 2D slices of a 1 mm diameter midbrain neural organoid stained with DAPI (blue, nuclear stain), β-tubulin (green, neuronal stain), and GFAP (red, astrocyte stain). Acquired on THUNDER Imager Cell with 10x magnification. Left: Raw widefield image, Right: THUNDER cleared image. Scale bar 400 μm. Sample courtesy of Dr Tanya Singh, University of Oxford, UK.

Fast, High-Contrast Widefield Imaging of Optically Challenging Samples

Live‑cell imaging of large, complex biological samples often requires large fields of view, sub-cellular resolution, high-sensitivity, and fast acquisition – all while maintaining low illumination…
Zebrafish heart, DAPI (nuclei, blue), Tropomyosin (cardiomyocytes, red) and GFP (primordial cardiac layer, green). Courtesy of Anna Jazwinska, University of Fribourg, Switzerland.

A Guide to Fluorescence Microscopy

Fluorescence microscopy uses the ability of fluorophores, dyes, or fluorescent proteins to emit light of a specific wavelength after being excited with light of a shorter wavelength. Biomolecules can…
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…
Optical microscope image, which is a composition of both brightfield and fluorescence illumination, showing organic contamination on a wafer surface. The inset images in the upper left corner show the brightfield image (above) and fluorescence image (below with dark background).

Visualizing Photoresist Residue and Organic Contamination on Wafers

As the scale of integrated circuits (ICs) on semiconductors passes below 10 nm, efficient detection of organic contamination, like photoresist residue, and defects during wafer inspection is becoming…
Image of magnetic steel taken with a 100x objective using Kerr microscopy. The magnetic domains in the grains appear in the image with lighter and darker patterns. A few domains are marked with red arrows. Courtesy of Florian Lang-Melzian, Robert Bosch GmbH, Germany.

Rapidly Visualizing Magnetic Domains in Steel with Kerr Microscopy

The rotation of polarized light after interaction with magnetic domains in a material, known as the Kerr effect, enables the investigation of magnetized samples with Kerr microscopy. It allows rapid…
Region of a patterned wafer inspected using optical microscopy and automated and reproducible DIC (differential interference contrast). With DIC users are able to visualize small height differences on the wafer surface more easily.

6-Inch Wafer Inspection Microscope for Reliably Observing Small Height Differences

A 6-inch wafer inspection microscope with automated and reproducible DIC (differential interference contrast) imaging, no matter the skill level of users, is described in this article. Manufacturing…
Shown is the DMi8 inverted microscope which is used for life-science research.

Factors to Consider When Selecting a Research Microscope

An optical microscope is often one of the central devices in a life-science research lab. It can be used for various applications which shed light on many scientific questions. Thereby the…
These images illustrate the need for multiple z-slices to capture all gH2Ax foci in a given cell and get an accurate count.

Development and Derisking of CRISPR Therapies for Rare Diseases

This on-demand presentation by Dr. Fyodor Urnov and Dr. Sadik Kassim, originally delivered at ASGCT 2025, focused on a critical challenge in genetic medicine: how to scale CRISPR therapies from…
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