Former "Price Is Right" host Bob Barker is playing "let's make a deal" with the medical lab staff at St. Louis' Washington University. According to the "St. Louis Post-Dispatch," Barker has fired off a letter to the school's chancellor asking them to stop using live cats for medical training. The 89-year-old animal activist is offering to donate $75,000 for the school to buy mannequins for its infant life support course. But medical experts say the mannequins are not substitute enough for trainees to learn the proper way to clear air passages.