but above comments explaint it... u cant get any relations with skinned body and aliens and pred technology...
but it dosent explain why pred do that even he was on "cleaning" misson
and i liked the blue liquid concept but it is poorly developted....
it stands there like another weapon in avp games
besides it does not make any sanes... dissolving cheast busted bodys if there where developed to eradicate only alien traces (sewer scene, wood scene, , mmm i like he spill just a bit blue liquid in pool and it become boiling)
ok so blue llquis has something to do with the aliens as it dissolves only alien and a creatures/objects whose been in contact with alien