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![[PHOTOGRAPH] DNA (ribbon model for backbone with ball-and-stick model for base pairs) [Public domain image courtesy of Jerome Walker,Dennis Myts] [PHOTOGRAPH] DNA (ribbon model for backbone with ball-and-stick model for base pairs) [Public domain image courtesy of Jerome Walker,Dennis Myts]](/news/releases/2010/images/sm/0205dna_controls_sm.jpg)
![[PHOTOGRAPH] A sprinter kneeling with his feet in the blocks, ready to run [Photo © & licensed by Getty Images, #AA033222] [PHOTOGRAPH] A sprinter kneeling with his feet in the blocks, ready to run [Photo © & licensed by Getty Images, #AA033222]](/news/releases/2010/images/sm/0204sp_doping_sm.jpg)
![[PHOTOGRAPH] Cracked mud. [Photo © and licensed by Getty Images, # NPA_068] [PHOTOGRAPH] Cracked mud. [Photo © and licensed by Getty Images, # NPA_068]](/news/releases/2010/images/sm/0203adaptation_sm.jpg)
