Nor would he name the pet food plant, explaining that the department relied on the voluntary cooperation of such plants for brain samples.

The pattern was so consistent that brain samples from the victims were virtually indistinguishable.

The department's own inspectors at the site wanted to take a brain sample for testing but were overruled by their regional office.

Part of his job was to collect brain samples for experimentation.

Before the veterinarian could take a brain sample, plant officials refused to keep the carcass.

"Interesting intelligence levels-I can't wait to get a brain sample."

(The testing began only in October, when the government starting paying $10 a brain sample.)

Autopsies were usually performed, and brain samples were taken to be used for "medical research."

Dexter drew a brain sample from each dead comp.

The tests were done on brain samples at a laboratory in Ames, Iowa.