BioTime? "the leaders in life-extention Science."
Since 1992, BioTime has been testing Hextend in baboons, pigs, and dogs, replacing their entire blood supply and then cooling them to 35 degrees. At that point, vital signs cease. Bleeding virtually stops. Oxygen-hungry tissues go on a diet. Then technicians raise the body temperature, reintroduce the blood, and shock the heart to life.
"Right now, we can easily bring animals back from two hours of absolute clinical death," says Hal Sternberg, BioTime's VP of research. "No pulse, no respiration, no measurable brain activity."
Here is the company http://www.biotimeinc.com/