A virus (from the Latin virus meaning toxin or poison) is a sub-microscopic infectious agent that is unable to grow or reproduce outside a host cell.
http://en.wikipedia.org/wiki/Virus

Learn how to prevent computer viruses and improve your computer security. Keep your computer current with the latest updates, antivirus tools, and information on recent virus ...
http://www.microsoft.com/protect/computer/basics/virus.mspx

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http://dictionary.reference.com/search?q=viruses

LiveScience.com explains human viruses , viruses in the human body , common human viruses , types of human viruses and human papilloma viruses
http://www.livescience.com/viruses/

Viruses Properties: They are obligate intracellular parasites. Probably there are no cells in nature that escape infection by one or more kinds of viruses. (Viruses that infect ...
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/V/Viruses.html

Viruses have been found in all cellular forms of life, from bacteria to chordates. Pathogenic human and animal viruses are causative agents of serious diseases such as AIDS ...
http://www.ncbi.nlm.nih.gov/genomes/VIRUSES/viruses.html

References. Calisher, C. H., M. C. Horzinek, M. A. Mayo, H. W. Ackermann, and J. Maniloff. 1995. Sequence analyses and a unifying system of virus taxonomy - consensus via consent.
http://tolweb.org/Viruses

Introduction to the Viruses. In 1898, Friedrich Loeffler and Paul Frosch found evidence that the cause of foot-and-mouth disease in livestock was an infectious particle smaller ...
http://www.ucmp.berkeley.edu/alllife/virus.html

plant viruses and viroids protein shell virus replication virus particle viruses and cancer: An introduction to the structure of viruses.
http://biology.about.com/library/weekly/aa110200a.htm

Track viruses, risks and other online threats with Internet Threat Meter. ... Microsoft addresses several client-side flaws Microsoft released fixes for several client-side ...
http://www.symantec.com/norton/security_response/index.jsp

Viruses are true parasites that can't live on their own, but go into host cells to reproduce and often cause disease.
http://www.microbeworld.org/microbes/virus/

Antivirus software for home or business. The world's fastest antivirus updates. Free virus scan and antivirus trial downloads.
http://www.kaspersky.com/virusinfo

Viruses and other serious security threats -- and what to do if you've been infected
http://www.scambusters.org/viruses.html

A computer virus can cause a lot of damage. Find out about worms, computer virus history, origins, and evolution, and how to protect your computer.
http://computer.howstuffworks.com/virus.htm

HouseCall is a free online virus scanner offered by Trend Micro, which checks whether a computer has been infected by viruses, spyware, or other malware. HouseCall performs ...
http://housecall.trendmicro.com/

Did you know that the average bacterium is 1,000 nanometers long? That?s pretty small, but it?s still huge compared to a virus. Dr. Greene explains the differences between ...
http://www.drgreene.com/21_527.html

The Antivirus Software category contains programs developed to detect and remove computer viruses and other virus-related software from users' computers.
http://www.download.com/Antivirus-Software/3150-2239_4-0.html

Information about viruses and other malware from Kaspersky Lab, the industry's leading antivirus software. Buy Kaspersky antivirus and antispyware and protect your computer from ...
http://usa.kaspersky.com/threats/viruses.php

1) Chapter title: Viruses (a) Found at this site are additional pages of possibly related interest including: [virus particl e s] [virus growth] [virus types]
http://www.mansfield.ohio-state.edu/~sabedon/black10.htm

Created by George Rice, Montana State University "Viruses straddle the definition of life. They lie somewhere between supra molecular complexes and very simple biological entities.
http://serc.carleton.edu/microbelife/yellowstone/viruslive.html