Guy nodded once.
Chisen took a small sample collection kit from the inner pocket of his lab coat.
The kit was only palm-sized, with three compartments: one held sterile swabs, another held sealed microcentrifuge tubes prefilled with tissue preservation solution, and the third held a disposable sterile scalpel.
He unwrapped the scalpel and loosened the cap of a centrifuge tube in preparation.
Then he walked to a maintenance port at the base of the hexagonal prism-a circular opening less than twenty centimeters across, normally sealed with screws, used to clean the outlet filter.
Chisen pried out the screws with a kunai, opened the maintenance port, and reached inside. He could just reach the back of the test subject's calf.
The scalpel made an incision less than a centimeter deep in the skin of its calf.
There was very little bleeding. With no heartbeat, the blood had no pressure behind it. Only a trace of dark red blood seeped from the cut, already thickened by oxygen deprivation.
He collected a small piece of subcutaneous tissue and a short section of muscle fiber from the incision, placed them in separate centrifuge tubes, tightened the caps, and returned them to the sample collection kit.
The whole process took less than twenty seconds.
"Done."
He withdrew his hand from the maintenance port, loosely replaced its cover, then retreated to the workshop entrance to stand with Tenten and Neji.
The chakra threads wrapped around the five fingers of Tenten's right hand had already carried the iron ball to the inlet in the dome.
The iron ball hung directly above the inlet, turning slightly at the boundary between the dark red emergency lighting and the dome's pale gold light. Tenten was waiting for Guy's order.
Standing in front of the hexagonal prism, Guy took one last