Living Hell (2008) também conhecido como Organizm (título em DVD).
Da Wikipedia:
[H]is mother once worked at the base and warned him that something terrible was stored there, in "Sublevel 3, Vault 12." [...] Inside is a sealed tank [...]. They discover a man's corpse with evidence of disease inside, but when Carrie attempts to biopsy the infected tissue, the infection comes alive in the form of giant, rapidly-growing plantlike roots. Struss is immediately killed when he tries to bolt the tank closed, and the organism grows out of the room in moments. [...] Frank is infected by a sample given to Carrie by an elderly resident, but the organism dies within his body; he realizes that his blood possesses antibodies that can kill the organism due to his heritage. [...] Frank covers Carrie in his blood for protection and they fly in a stolen helicopter back to Fort Lambert so they can kill the organism.