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- Studies of site:nih.gov Influenza Virus Electron Microscope
Fine structure of influenza A virus observed by electron cryo ...
A rapidly frozen vitrified aqueous suspension of influenza A virus was observed by high resolution electron cryomicroscopy. The influenza particles were grouped into small (diameter < 150 nm) spherical particles with well organized interiors, large ...
Influenza virus-mediated membrane fusion: Structural insights …
Sep 1, 2015 · In this review, we survey EM-based contributions towards the characterization of influenza virus-mediated membrane fusion and anticipate the potential for future …
- Author: Juan Fontana, Alasdair C. Steven
- Publish Year: 2015
Native Morphology of Influenza Virions - PMC
However, when fragile, lipid-enveloped viruses, including influenza viruses, are examined by using electron microscopy, artifactual effects such as ultracentrifugation, storage, and air drying should be considered.
ELECTRON MICROSCOPY OF EARLY CYTOPLASMIC …
Recently improved methods for visualization of thin tissue sections by electron microscopy have been applied to the study of early changes in the bronchial epithelium of mice infected by …
Sample Preparation for Cryo-Electron Tomography of Influenza A …
Electron microscopy of resin-embedded samples has traditionally been employed to investigate viral replication in cells. However, this technique relies on chemical fixation of samples, …
Room Temperature Transmission Electron Microscopy of …
Transmission electron microscopy is an imaging technique that visualizes the ultrastructure of samples, revealing not just the structures of interest but also the context occurring around the …
STRUCTURE AND DEVELOPMENT OF VIRUSES OBSERVED …
Some properties of influenza virus filaments shown by electron microscopic particle counts. J Gen Microbiol. 1954 Oct;11(2):325–331. doi: 10.1099/00221287-11-2-325. [ DOI ] [ PubMed ] [ …
Electron microscopy of influenza virus. A comparison of …
Aug 20, 1985 · An electron microscopical study was made of the influenza virus, type B/Hong Kong, in the unstained, frozen, hydrated state after quench-freezing in cooled liquid ethane. …
Influenza A Viruses Adapt Shape in Response to Environmental …
Feb 10, 2025 · Influenza A virus particles strategically adapt their shape – to become either spheres or larger filaments – to favor their ability to infect cells depending on environmental …
Structure of Influenza Virus Ribonucleoprotein …
The influenza A virus genome consists of eight segmented, single-stranded, negative-sense RNAs. Each viral RNA (vRNA) segment forms a ribonucleoprotein complex (RNP) together with nucleoproteins and a polymerase complex, …
Electron microscopy of the influenza virus submembranal structure
Electron micrographs of stain-penetrated influenza virus particles show a variety of internal structures that all consist of units of 4 X 4 nm. Isolated influenza virus M-protein, that is …
Building a better flu vaccine - National Institutes of Health (NIH)
Jan 14, 2025 · Colorized negative-stained transmission electron microscope image shows ultrastructural details of a number of influenza virus particles. CDC / Dr. F. A. Murphy. …
Influenza virus-mediated membrane fusion: structural insights …
Briefly, cryo-electron microscopy (cryo-EM) and cryo-electron-tomography (cryo-ET) have shown the structure of influenza virions at neutral pH in close-to-native conditions; thin section EM …
Correlative Light and Electron Microscopy of Influenza Virus
Here we show a basic methodology to visualize incoming and egressing IAV particles by correlative light and electron microscopy (CLEM). We combine fluorescence microscopy of …
Direct imaging of pH1N1 2009 influenza virus replication in …
Our findings are in consistent with the earlier electron microscopy studies that had identified extracellular virus particles in lung tissue sections from fatal pH1N1 2009 cases, but we could …
3D structure of the influenza virus polymerase complex: …
The 3D structure of the influenza virus polymerase complex was determined by electron microscopy and image processing of recombinant ribonucleoproteins (RNPs). The RNPs were …
Fine structure of influenza A virus observed by electron cryo ...
Jan 15, 1994 · A rapidly frozen vitrified aqueous suspension of influenza A virus was observed by high resolution electron cryomicroscopy. The influenza particles were grouped into small …
Characterization of Hemagglutinin Antigens on Influenza Virus …
Some of the first structural views of influenza virus particles and surface glycoprotein spikes were revealed by electron microscopy using the negative staining technique [6,7,60]. This technique …
Quantitative structural analysis of influenza virus by cryo-electron ...
May 5, 2022 · While cryo-electron tomography (cryoET) can depict the 3D organization of pleomorphic influenza, the low signal-to-noise ratio inherent to cryoET and viral heterogeneity …
Structural studies of influenza virus RNPs by electron microscopy ...
Here, we show using electron tomography and image analyses that isolated RNP filaments are not rigid helical structures, but instead display variations in lengths, curvatures, and even …
Modern Uses of Electron Microscopy for Detection of Viruses
Electron microscopy (EM) has long been used in the discovery and description of viruses. Organisms smaller than bacteria have been known to exist since the late 19th century ( 11 ), …
Characterization of Influenza Vaccine Hemagglutinin Complexes …
However, HA on the influenza virus surface and designed HA nanoparticles were shown to be in the prefusion state by cryo-electron microscopy (28, 45), and in this study, we determined that …
Cross-protection against homo and heterologous influenza …
Influenza virus haemagglutinin (HA) is a key protein that mediates viral invasion of host cells and is the primary target of anti-influenza virus-neutralizing antibodies. HA-induced neutralizing …