There are different definitions and descriptions about the T-Virus.

We are going to publish different concepts about the T-Virus obtained from different companies or websites.

WIKIPEDIA 

The Tyrant Virus (simply referred to as the T-Virus) is a fictional virus from the Resident Evil. The T-Virus was initially created by the Umbrella Corporation to mutate organisms into lethal biological weapons and supersoldiers. The T-Virus has played a major role in the Resident Evil video game and movie franchise.*

* This article is licensed under the [GNU Free Documentation License]  for  more information on GNU visit: http://www.gnu.org/copyleft/fdl.html.  It uses material from the Wikipedia article at http://en.wikipedia.org/wiki/T-Virus