Students pay respects to laboratory animals

Teachers and students from the Medical School at Xi'an Jiaotong University get in line to lay flowers at a tomb dedicated to laboratory animals at the school in Xi'an, Northwest China's Shaanxi province, June 13, 2011. The tomb was built last year and Lv Yi, a professor with the university, said the activity is aimed at showing respect to animals and life -- core qualities of medical students, in his view. [Photo/CFP]