Movie where a man is injected with alien DNA that heals his wounds

Question

I remember watching this movie around 2008-2010. It's in English and perhaps a typical Hollywood movie. I only remember this part of the movie.

A man and a woman trapped in a room (maybe a storage room) have one injection and must choose who should be injected. Both are wounded, I think. Finally, the man receives the injection and his wounds are healed. The injection contains alien DNA of some sort. They study this alien.

The man is wearing military clothing and has guns. I think the woman was blonde and wore white clothing.

Answer 1

It's possible this was the 2005 movie Doom; the protagonist, Reaper, is mortally wounded and his sister, a scientist, injects him with the Martian DNA (C24 serum) to save his life. It heals his wound and makes him a super-soldier capable of taking on the C24-infected, but psychotic, sergeant.

You can see the scientist (Rosamund Pike) and Reaper (Karl Urban) in this scene, although it doesn't show the injection: