Weekly Photos: May 31- June 6

Gao Lipeng, 23, prays before undergoing a procedure to collect his hematopoietic stem cells at a hospital in Beijing, June 3, 2010. Gao registered with the China Marrow Donor Program (CMDP), a public welfare organization under the leadership of the Red Cross Society of China, four years ago, when he was a university student, and volunteered to donate his stem cells. After he learned that a young girl matched his blood sample last year, he started exercising, jogging every day and gave up meat for two months, in order to provide the best quality stem cells. [Photo/CFP]