Mid 90's creature regenerates inside a bunker

[Camplain]

Hoping someone can identify a movie I saw on cable when I was a kid sometime around 1993.

All I remember is there is a creature that almost gets into a (underground?) facility that may have been located in a desert. The facility goes on lockdown and as the gate closes it severs a small piece of the creature. The severed bit is placed in an area for study. In the night, around the time a love scene is taking place elsewhere, the tissue starts to regenerate and of course leads to a creature on the loose inside the facility. I can't remember if it regenerated completely on it's own or if it needed to consume victims to grow.

My memory is very fuzzy, but as I recall the creature was of humanoid shape, reddish in color, likely covered in slime. If I had to compare the texture to something it'd most closely resemble Carnage from the Spiderman comics.

Been wondering about this for years, excited to start checking suggestions.

[retrorussell]

Maybe one of the Terror Within movies?

[Camplain]

I think you're right! Will have to track down a copy to be sure, but IMDB's description of Terror Within II sounds very much like the movie I remember. Thanks!