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Christoph Greb , Dr.

Christoph Greb

Christoph Greb studierte Zellbiologie, Parasitologie und Virologie an der Philipps-Universität in Marburg. Im Rahmen seiner Diplomarbeit und seiner Dissertation am dortigen Institut für Zytobiologie und Zytopathologie untersuchte er den vesikulären Transport von apikal gelegenen Proteinen in polarisierten Epithelzellen mit Hilfe von Biochemie sowie TIRF- und konfokaler Mikroskopie. Ab Dezember 2011 schrieb er als freier Mitarbeiter für das Leica Science Lab. Nach einem Engagement bei Novartis Vaccines & Diagnostics begann er im Oktober 2013 als Scientific Writer für das Widefield-Team von Leica Microsystems.

Automated Laser Microdissection for Proteome Analysis

Deep Visual Proteomics Provides Precise Spatial Proteomic Information

Despite the availability of imaging methods and mass spectroscopy for spatial proteomics, a key challenge that remains is correlating images with single-cell resolution to protein-abundance…
Mouse brain (left) microdissected with a 10x objective (upper right). Inspection of the collection device (lower right).

Molecular Biology Analysis facilitated with Laser Microdissection (LMD)

Extracting biomolecules, proteins, nucleic acids, lipids, and chromosomes, as well as extracting and manipulating cells and tissues with laser microdissection (LMD) enables insights to be gained into…
Microscope equipped with a K7 color CMOS camera for life-science and industry imaging applications.

Technical Terms for Digital Microscope Cameras and Image Analysis

Learn more about the basic principles behind digital microscope camera technologies, how digital cameras work, and take advantage of a reference list of technical terms from this article.
Bild von immunfluoreszierend markierten Zellen, wobei Mitochondrien rot, Zellkerne blau und Aktin grün dargestellt sind.

Erforschung der Virusreplikaton mit Fluoreszenzmikroskopie

Viren können mit Hilfe verschiedener Mikroskopietechniken untersucht werden. Je nach Vergrößerung und Auflösung des Mikroskops kann die Beobachtung auf Gewebe-, Zell- oder Virionenebene erfolgen.
Molecular structure of the green fluorescent protein (GFP)

Introduction to Fluorescent Proteins

Overview of fluorescent proteins (FPs) from, red (RFP) to green (GFP) and blue (BFP), with a table showing their relevant spectral characteristics.
Patch pipette touching a murine hippocampal neuron. Image courtesy of A. Aguado, Ruhr University Bochum, Germany.

What is the Patch-Clamp Technique?

This article gives an introduction to the patch-clamp technique and how it is used to study the physiology of ion channels for neuroscience and other life-science fields.
Neurons imaged with DIC contrast.

Differential Interference Contrast (DIC) Microscopy

This article demonstrates how differential interference contrast (DIC) can be actually better than brightfield illumination when using microscopy to image unstained biological specimens.

Going Beyond Deconvolution

Widefield fluorescence microscopy is often used to visualize structures in life science specimens and obtain useful information. With the use of fluorescent proteins or dyes, discrete specimen…

Phasenkontrast und Mikroskopie

Dieser Artikel erklärt den Phasenkontrast, eine optische Mikroskopietechnik, die feine Details von ungefärbten, transparenten Proben sichtbar macht, die mit gewöhnlicher Hellfeldbeleuchtung schwer zu…

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.
Intensitätsverteilung (willkürliche Farbkodierung) eines Bildes von zwei Punkten, bei denen der Abstand zwischen ihnen dem Rayleigh-Kriterium entspricht.

Mikroskopische Auflösung: Konzepte, Faktoren und Berechnungen

Dieser Artikel erklärt in einfachen Worten mikroskopische Auflösungskonzepte wie die Airy-Scheibchen, das Abbe-Limit, das Rayleigh-Kriterium und der Halbwertsbreite (FWHM). Außerdem wird der…
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…
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…
3D Reconstruction of brain slide image_Mica

3D Tissue Imaging: From Fast Overview To High Resolution With One Click

3D Tissue imaging is a widespread discipline in the life sciences. Researchers use it to reveal detailed information of tissue composition and integrity, to make conclusions from experimental…
MDCK cysts on day 9

How To Perform Fast & Stable Multicolor Live-Cell Imaging

With the help of live-cell imaging researchers gain insights into dynamic processes of living cells up to whole organisms. This includes intracellular as well as intercellular activities. Protein or…
Two-color caspase assay with tile scan

Multi-Color Caspase 3/7 Assays with Mica

Caspases are involved in apoptosis and can be utilized to determine if cells are undergoing this programmed cell death pathway in so-called caspase assays. These assays can be run by e.g. flow…

Fluorescent Dyes

A basic principle in fluorescence microscopy is the highly specific visualization of cellular components with the help of a fluorescent agent. This can be a fluorescent protein – for example GFP –…
Dividing fission yeast S. pombe stained with two markers against spindle pole bodies (Pcp1-GFP, green) and cytokinesis ring (Rlc1-mCherry; red).

Studying Cell Division

Cell division is a biological process during which all cellular components must be distributed among the daughter cells. The division process requires firm coordination for success. Microscopy is…

How to improve your Biomarker Discovery Workflow with Laser Microdissection

Biomarkers can be used as indicators of certain diseases, such as cancer. The tumor microenvironment moved into the spotlight in this concern. It is in close interaction with the tumor itself.…

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…

Microscopy in Virology

The coronavirus SARS-CoV-2, causing the Covid-19 disease effects our world in all aspects. Research to find immunization and treatment methods, in other words to fight this virus, gained highest…
Image source: Adobe Stock

How to Sanitize a Microscope

Due to the current coronavirus pandemic, there are a lot of questions regarding decontamination methods of microscopes for safe usage. This informative article summarizes general decontamination…

Improving RNA Analysis with Laser Microdissection

Parkinson’s disease is a progressive neurodegenerative disorder connected with cell death of dopamine-releasing neurons in the brain. Differences in gene expression between individual…

How to improve your DNA Mutation Analysis Workflow with Laser Microdissection

DNA mutations lead to abnormal proteins or missing functional proteins, which can cause cells to multiply uncontrollably and become cancerous. To find and understand the underlying mutation for a…
Mammalian cell culure. Phase contrast and fluorescence image.

Introduction to Mammalian Cell Culture

Mammalian cell culture is one of the basic pillars of life sciences. Without the ability to grow cells in the lab, the fast progress in disciplines like cell biology, immunology, or cancer research…
Convalaria

Introduction to Widefield Microscopy

This article gives an introduction to widefield microscopy, one of the most basic and commonly used microscopy techniques. It also shows the basic differences between widefield and confocal…
Dronpa chromophore

Photoactivatable, Photoconvertible, and Photoswitchable Fluorescent Proteins

Fluorescent proteins (FPs) such as GFP, YFP or DsRed are powerful tools to visualize cellular components in living cells. Nevertheless, there are circumstances when classical FPs reach their limits.…
Left: Tissue cells marked with an immunolabel (FITC) illuminated with wide-band UV excitation. Note the tissue structure with blue autofluorescence. Right: Same tissue and same immunostaining with FITC label illuminated with epi-illumination using narrow-band blue (490 nm) light. Note the increased image contrast (Ploem, 1967)

Milestones in Incident Light Fluorescence Microscopy

Since the middle of the last century, fluorescence microscopy developed into a bio scientific tool with one of the biggest impacts on our understanding of life. Watching cells and proteins with the…
HeLa cells stimulated with LPS. Image has been subjected to deconvolution.

Chronic Inflammation Under the Microscope

In the course of chronic inflammation certain body areas are recurrently inflamed. This goes along with many human diseases. With the help of widefield light microscopy, the underlying processes can…
Gene editing with Cas9

Gene Editing with CRISPR/Cas9 - Breakthrough in Genome Engineering

The CRISPR/Cas9 system is one of several different bacterial systems for defense against viral attacks. It consists of two main components. One is a small piece of RNA which binds to the viral target…
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