"Based on what I've seen they don't seem very particular about who they take. If there's a pattern I've yet to find it." He would likely not have been so cavalier about admitting that he didn't know what was going on if he'd seen an indication that other patients did. Some knew more, some less, but it seemed that no one had figured out the puzzle yet. He had time.

"Can't see them?" Hojo sounded amused. "In that they are under your clothes, that you won't show me, or that the ink used is skin-toned?"