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Universal PAINT – Dynamic Super-Resolution Microscopy
Super-resolution microscopy techniques have revolutionized biology for the last ten years. With their help cellular components can now be visualized at the size of a protein. Nevertheless, imaging…
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Immersion Freezing for Cryo-Transmission Electron Microscopy: Applications
A well established usage case for cryo-TEM is three-dimensional reconstruction of isolated macromolecules, virus particles, or filaments. On one hand, these approaches are based on averaging of…
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Glycerol Spraying/Platinum Low Angle Rotary Shadowing of DNA with the Leica EM ACE600 e-beam
Glycerol spraying/low angle rotary shadowing (Aebi and Baschong, 2006) is a preparation technique used in biology to visualize structures yielding insufficent contrast with other techniques, due to…
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Acousto Optics in True Confocal Spectral Microscope Systems
Acousto-optical elements have successfully replaced planar filters in many positions. The white confocal, regarded as the fully spectrally tunable confocal microscope, was not possible without this…
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Nobel Prize 2013 in Physiology or Medicine for Discoveries of the Machinery Regulating Vesicle Traffic
On October 7th 2013, The Nobel Assembly at Karolinska Institutet has decided to award The Nobel Prize in Physiology or Medicine 2012 jointly to James E. Rothman, Randy W. Schekman and Thomas C. Südhof…
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Thermodynamic Considerations Regarding the LN2 in a High Pressure Freezer
Employing liquid nitrogen (LN2) as a coolant in the complex process of high pressure freezing raises certain considerations regarding phase transition not only of the liquid sample to be frozen but…
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Carbon Thickness Evaluation in Electron Microscopy
The coating layers applied and used for electron microscopy imaging are commonly controlled and measured by quartz crystals. These crystals oscillate with a certain frequency (around 6 megahertz when…
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Spectral Detection – How to Define the Spectral Bands that Collect Probe-specific Emission
To specifically collect emission from multiple probes, the light is first separated spatially and then passes through a device that defines a spectral band. Classically, this is a common glass-based…
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Nobel Prize 2012 in Physiology or Medicine for Stem Cell Research
The Nobel Prize recognizes two scientists who discovered that mature, specialised cells can be reprogrammed to become immature cells capable of developing into all tissues of the body. Their findings…
