I'm trying to identify a movie I saw around 2010, but forgot the name of.
Here's what I remember of the movie:
There is a military base with a sealed sub-level.
Inside that, there is a room with a body held in a sealed container. The container may look like a bath tub. It is also (if memory serves) full of some sort of preservative liquid.
When the container is opened, tentacle-like plant growth erupts from the chest of the dead body
The growth is extremely fast, and spreads in all directions
It quickly overwhelms the base, and spreads underground towards neighboring towns
The only thing that repels the growth is the blood of the protagonist
This is because the dead body in the tub belonged to a family member of his, who worked in the military and created this monster partly with his own cells - so his (and thus, the progatonist's) blood is not recognized as foreign by the growth creature, and thus not digested by it
The progatonist and his girlfriend (?) coat themselves in his blood, then travel back to the military base to infuse the blood into the creature's "growth nexus" - the spot on the dead body's chest where the growth originated when the container was unsealed
this kills the creature
I think I may have seen this movie on the syfy/sci-fi channel. Even if not, I'm pretty sure it was somewhere on cable TV. I don't remember much else about the movie, and I've never been able to find it since.
Can anyone help me identify the name of it?
I have tried searching phrases like "growth nexus monster movie" but had no luck.