The animals were sedated and bled until their hearts stopped. Ice-cold
fluids were flushed through the body's largest artery, deep-chilling first
the brain and heart and then the rest of the body. After more than two hours
in this limbo, they were sewn up, gradually warmed and put on a heart-lung
machine to restart blood flow. Most survived what should have been a lethal
injury and most appeared to be cognitively fine, Tisherman and Alam say.