[ He raises his brows to that, intentional and knowing. It wasn't incidental at all, and that's part of what worries him in what's happening. This shouldn't be possible and yet somehow it seems to fit; he doesn't really like it. ]

It isn't so much about cross-contamination as it is the fact that I'm not capable. You can't multiply zero and get anything but zero, and this is the same. Especially healing; that isn't something we even have.

[ Despite the words, Cain isn't arguing. He's adding point to counterpoint, hoping to chip off the edges of the mystery until they can crack it open. ]