Kapitel 33
Visualisierung von Zellen, Geweben und Molekülen
Bildgebung biologischer Proben mit optischer Mikroskopie
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in ...
Phasenkontrast und Differentielle Interferenzkontrastmikroskopie
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular ...
Fixierung und Sektionierung
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation ...
Immunfluoreszenzmikroskopie
A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as ...
Immunzytochemie und Immunhistochemie
Immunocytochemistry (ICC) and immunohistochemistry (IHC) are techniques that use antibodies to check for specific proteins or antigens in a sample. The ...
Konfokale Fluoreszenzmikroskopie
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability ...
Proteindynamik in lebenden Zellen
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent ...
Interne Totalreflexionsfluoreszenzmikroskopie
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid ...
Rasterkraftmikroskopie
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, ...
Hochauflösende Fluoreszenzmikroskopie
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread ...
Elektronenmikroskopie im Überblick
The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can ...
Rasterelektronenmikroskopie
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a ...
Transmissionselektronenmikroskopie
In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an ...
Vorbereitung der Proben für die Elektronenmikroskopie
To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does ...
Immungold-Elektronenmikroskopie
Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and ...
Kryoelektronenmikroskopie
Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological ...
Elektronenmikroskopische Tomographie und Einzelteilchen-Rekonstruktion
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron ...
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