What was that stuff anyway?
In the opening scene, they showed the "engineer" drinking it from a cup. We saw his DNA being ripped apart. Was he just a test subject?
The goo in the 'vases' was said to be organic. The vases contained ampules of whatever David gave to Shaw's husband. He ended up with a worm coming out of his eye and eventually in the 'spider-human' state.
Oh well.