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Primary leaves of cowpea (Vigna unguiculata "California Blackeye") inoculated with cowpea mosaic virus (CPMV) containing the GFP-gene inserted between the movement protein (MP) and the capsid proteins (CPs) in the viral RNA 2

Introduction to Live-Cell Imaging

The understanding of complex and fast cellular dynamics is an important step to get insight into biological processes. Therefore, today’s life science research more and more demands studying…

TIRF image of brest carcinoma tumor cells expressing GFP tagged cell adhesion Molecule CD44 that is expressed on the cell membrane, imagined in TIRF.

Total Internal Reflection Fluorescence (TIRF) Microscopy

Total internal reflection fluorescence (TIRF) is a special technique in fluorescence microscopy developed by Daniel Axelrod at the University of Michigan, Ann Arbor in the early 1980s. TIRF microscopy…

TIRF Image of Tubulin, YFP, penetration depth: 120 mm

Applications of TIRF Microscopy in Life Science Research

The special feature of TIRF microscopy is the employment of an evanescent field for fluorophore excitation. Unlike standard widefield fluorescence illumination procedures with arc lamps, LEDs or…

Snapshot from a time lapse of a calcium imaging experiment using the ratiometric calcium indicator Fura-2.

Ratiometric Imaging

Many fundamental functions of a cell strongly depend on delicate, but nevertheless dynamic balances of ions (e.g. calcium, magnesium), voltage potentials and pH between the cell’s cytosol and the…

New Standard in Electrophysiology and Deep Tissue Imaging

The function of nerve and muscle cells relies on ionic currents flowing through ion channels. These ion channels play a major role in cell physiology. One way to investigate ion channels is to use…