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A white rat used for gene therapy research smells its babies just... News PhotoAlternative Medicine,Animal,Baby,Chengdu,DNA,Healthcare And Medicine,Illness,Newborn Animal,Old,Rat,Research,Sichuan Province,Smelling,Waist UpPhotographer Collection: Getty Images News 2005 China PhotosCHENGDU, CHINA - AUGUST 3: (CHINA OUT) A white rat used for gene therapy research smells its babies just born at the State Key Laboratory of Biotherapy established by the West China Medical School of Sichuan University on August 3, 2005 in Chengdu of Sichuan Province, southwest China. The lab has carried out gene therapy, immunotherapy, cell therapy and other researches, using thousands of white rats, according to local media. (Photo by China Photos/Getty Images)