Bruce breathes a sigh when Adrian leaves and goes right back into his work. Or tries to. He may be a genius but even a genius' brain doesn't always work well on 48 hours of little to no sleep. It was like pulling teeth, trying to concentrate, determined to find the cure this time. He had to. He couldn't take much more of this.
He'd been starting to nod off without realizing it when the knock comes. And Bruce opens his eyes to find the notes he just wrote a moment ago were just gibberish that doesn't make sense now.
It wasn't fair. Why couldn't he get this?? In a fit of frustration, Bruce sweeps all the papers off his desk angrily and covers his face with his hands.