Doctors Carry Out Experiment On Rats In A Hospital Laboratory

CHONGQING, CHINA - FEBRUARY 20: (CHINA OUT) White Rats undergo an hemorrhagic shock experiment in a laboratory of Daping Hospital on February 20, 2008 in Chongqing Municipality, China. During the experiment, doctors anaesthetised the rat and cut its femoral artery, making it hemorrhage. After two hours, the doctors gave it transfusion to revive the rat. The hospital uses over 10,000 rats and mice for medical research annually. (Photo by China Photos/Getty Images)