In the ensuing pause the look fades off the man's face. Looks like he's too tired to argue.

"I should warn you, maybe..." he adds, striding across the hall - "... that you're doing a serious damage." He nudges at the dead splicer with his toe. "The frontal lobe. Amygdala. After that to the hippocampus and finally the motor cortex." He turns her over. Nothing good on her. "It's why they have the... uh."

English fails him for a moment, and he shakes his hand to demonstrate. "... Twitching."