[ He'll ignore that comment about his appearance, thanks. Though his instincts certainly do flare up as he approaches. Werewolves are dangerous. They're supposed to be enemies. Elijah ignore it. He looks up from his tablet once, then back down at the screen in his lap. ]

I'm trying to figure out if I can isolate what it is about blood that makes it a suitable energy source in vampires.

[ That's clearly not the answer to his question. ]