[Robert listens quietly - he's come to realize that even if what Mulder says sounds insane, he's generally being completely serious.

And the idea of someone taking other people against their will to make vaccines...]

... It... seems atrocious, that such a huge c-conspiracy could... exist, without anyone doing anything to stop it...

... [And yet...] ... Did the vaccine... show any promise, though? Do you think... it c-could help...?

... Not that this is an... a-acceptable way to develop it...