Sinclair shakes his head. "Those things run off of ADAM, sport. Watched the development of 'em myself. You think there's something else down here that'd grow the skin back just like that?"

Which, now that he thinks about it, raises another question. Jack's only been in Rapture for a few days, but judging by the ease with which he injects those EVE hypos, he wouldn't say that he's been taking it easy on the splicing. And yet...he's rational enough, he's not violent unless provoked, no unusual growths or deformities that he can see. The kid's almost completely unaffected. Maybe it just hasn't had a real chance to take effect yet, but...it's a question for later. Right now he needs to find a way to stop this bleeding, and pretty fast.