[The ragged cut's from a piece of rusty metal, and it's probably a good thing his tetanus vaccination is up to date. Not that it's easy to tell and Roger being concerned about not turning into a zombie is still something Bruce would consider a sign of intelligence. ]

You came to the medical bay for cleaning supplies? [ Not the worst idea in the world. He finishes knotting off one of the stitches he's putting into his arm and then gestures with his head. ] Check that cabinet over there for the industrial cleaner. Soap is at the sink or under them. What are you trying to clean up?