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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!

Immersion Objectives

How an immersion objective, which has a liquid medium between it and the specimen being observed, helps increase the numerical aperture and microscope resolution is explained in this article.
Intensity distribution (arbitrary color coding) of an image of two points where the distance between them corresponds to the Rayleigh criterion.

Microscope Resolution: Concepts, Factors and Calculation

This article explains in simple terms microscope resolution concepts, like the Airy disc, Abbe diffraction limit, Rayleigh criterion, and full width half max (FWHM). It also discusses the history.
Living HeLa cells stained with WGA-488 (yellow), SPY-Actin (cyan), and SiR-Tubulin (magenta). Instant Computational Clearing (ICC) was applied.

How to Perform Dynamic Multicolor Time-Lapse Imaging

Live-cell imaging sheds light on diverse cellular events. As many of these events have fast dynamics, the microscope imaging system must be fast enough to record every detail. One major advantage of…
Spectral separation of 11 fluorophores coupled to polystyrene beads on a STELLARIS confocal system.

Multiplexing through Spectral Separation of 11 Colors

Fluorescence microscopy is a fundamental tool for life science research that has evolved and matured together with the development of multicolor labeling strategies in cells tissues and model…
Image of murine-brain tissue showing a region removed with UV laser microdissection.

RNA Quality after Different Tissue Sample Preparation

The influence of sample preparation and ultraviolet (UV) laser microdissection (UV LMD) on the quality of RNA from murine-brain tissue cryo-sections is described in this article. To obtain good…
Transverse histological cut of a rabbit tongue. 50 Mpixels images (2326 µm x 1739 µm) in 14 x 18 tiles. Lifetime gives an additional contrast that allows to differentiate different structures in histological stainings.

A Guide to Fluorescence Lifetime Imaging Microscopy (FLIM)

The fluorescence lifetime is a measure of how long a fluorophore remains on average in its excited state before returning to the ground state by emitting a fluorescence photon.
Staining is crucial to revealing details in the specimens.

H&E Staining in Microscopy

If we consider the role of microscopy in pathologists’ daily routines, we often think of the diagnosis. While microscopes indeed play a crucial role at this stage of the pathology lab workflow, they…
Type of contamination: spores

Cleanliness Analysis for Particulate Contamination

Devices, products, and their components fabricated in many industries can be quite sensitive to contamination and, as a result, have stringent requirements for technical cleanliness. Measurement…
Particles and fibers on a filter which will be counted and analyzed for cleanliness

Efficient Particle Counting and Analysis

This report discusses particle counting and analysis using optical microscopy for cleanliness of parts and components. Particle counting and analysis is a critical part of quality assurance in the…
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