Doctors with Chongqing Southwest Hospital's Liver, Gall and Pancreas Surgery Laboratory celebrate birthday for three mice that received liver transplant three years ago. On Feb 9, 2003, doctors of the hospital performed allotransplantation of the liver for three mice. It is said the mice's age is equivalent to 119 years in human life, for one year in a mouse' life equals 35 years in a man's.