[exDemMom]

If I were going to be introducing a retro-virus into a tumor as you described, I think I’d program it with some means of killing the tumor. For instance, I’d tell it to turn off an essential tumor gene. If I want to visualize tumor cells, I think I’d use something other than a retrovirus, like some sort of fluorescent dye that binds only to the tumor cells.

Science is such fascinating stuff. ;-)

[Rebel_Ace]

"...I think I’d program it with some means of killing the tumor..."

Actually, so would I. I was trying to think of a practical application of the specific "glow in the dark" gene that was mentioned in the puppy article. You know, to give a concrete example of a beneficial use of the specific "weird" effect being produced.

Since I am neither a biochemist or doctor, this was the first thing I could think of off the top of my head. I am certain that better minds than mine could do a better job.

"...Science is such fascinating stuff. ;-) "

Indeed it is.