Gruesome fun!
As a lead artist on David S. Goyer's Blade III (at CafeFX) I was responsible for designing animated virus textures that were later on applied as a digital moving makeup on the actors. I also worked on the virus attacking the lungs and the heart of Drake himself.
Here are some R&D tests I did for the project.
http://www.imdb.com/title/tt0359013/