Science Lab

Science Lab

Science Lab

Bienvenue sur le portail de connaissances de Leica Microsystems. Vous y trouverez des recherches scientifiques et du matériel didactique sur le thème de la microscopie. Le portail aide les débutants, les praticiens expérimentés et les scientifiques dans leur travail quotidien et leurs expériences. Explorez les didacticiels interactifs et les notes d'application, découvrez les bases de la microscopie ainsi que les technologies de pointe. Faites partie de la communauté Science Lab et partagez votre expertise.
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…
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.

Live-Cell Imaging Techniques

The understanding of complex and/or fast cellular dynamics is an important step for exploring biological processes. Therefore, today’s life science research is increasingly focused on dynamic…

How to Quantify Changes in the Metabolic Status of Single Cells

Metabolic imaging based on fluorescence lifetime provides insights into the metabolic dynamics of cells, but its use has been limited as expertise in advanced microscopy techniques was needed. Now,…

Super-resolved STED spectroscopy

Molecular interactions are key in cellular signalling. They are often ruled or rendered by the mobility of the involved molecules.

Step by Step Guide for FRAP Experiments

Fluorescence Recovery After Photobleaching (FRAP) has been considered the most widely applied method for observing translational diffusion processes of macromolecules. The resulting information can be…
Sub-Femtolitre volume_Fluorescence correlation spectroscopy (FCS)

Fluorescence Correlation Spectroscopy (FCS)

Fluorescence correlation spectroscopy (FCS) measures fluctuations of fluorescence intensity in a sub-femtolitre volume to detect such parameters as the diffusion time, number of molecules or dark…

Fluorescence Recovery after Photobleaching (FRAP) and its Offspring

FRAP (Fluorescence recovery after photobleaching) can be used to study cellular protein dynamics: For visualization the protein of interest is fused to a fluorescent protein or a fluorescent dye. A…

Förster Resonance Energy Transfer (FRET)

The Förster Resonance Energy Transfer (FRET) phenomenon offers techniques that allow studies of interactions in dimensions below the optical resolution limit. FRET describes the transfer of the energy…
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