Plant virus

Virology | What is Virus 2014 Lecture | Medical Documentary Films

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• published: 18 Mar 2016
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Virology | What is Virus 2014 Lecture | Medical Documentary Films Virology, correctly Virulogy, is the study of viruses – submicroscopic, parasitic particles of genetic material contained in a protein coat[1][2] – and virus-like agents. It focuses on the following aspects of viruses: their structure, classification and evolution, their ways to infect and exploit host cells for reproduction, their interaction with host organism physiology and immunity, the diseases they cause, the techniques to isolate and culture them, and their use in research and therapy. Virology is considered to be a subfield of microbiology or of medicine. A major branch of virology is virus classification. Viruses can be classified according to the host cell they infect: animal viruses, plant viruses, fungal viruses, and bacteriophages (viruses infecting bacteria, which include the most complex viruses). Another classification uses the geometrical shape of their capsid (often a helix or an icosahedron) or the virus's structure (e.g. presence or absence of a lipid envelope). Viruses range in size from about 30 nm to about 450 nm, which means that most of them cannot be seen with light microscopes. The shape and structure of viruses has been studied by electron microscopy, NMR spectroscopy, and X-ray crystallography. Read more about “Virology | What is Virus 2014 Lecture | Medical Documentary Films”: https://en.wikipedia.org/wiki/Virology You may also subscribe to MEDICAL DOCUMENTARY FILMS channel for more updated videos: https://www.youtube.com/channel/UCDlmyYCGBX9hjXf3WH3l6qw Thank you for watching “Virology | What is Virus 2014 Lecture | Medical Documentary Films”.