[There are sudden strange snarls from the other side of the pile of rubble, and one can hear uncoordinated scratching. Wait. So something was over there, something hungry by the looks of it, and yet that tendril had collapsed the foyer to keep them from going in...]

"Oh no! It's surrounded us!" "AHHH! There's another one!"

[The other panicked scientist points at another tendril, half-oozed out of an air vent and waving idly. The hallway it's in the direction of leads down. Mordin would recognize it as being the direction of the biology labs.]