A visitor looks at an installation 'Calavera' by Argentinean collective Mondongo, on 

A visitor looks at an installation 'Calavera' by Argentinean collective Mondongo, on display at an exhibition 'Death : The Richard Harris Collection' at the Wellcome Collection gallery in London, Wednesday, Nov. 14, 2012. (AP Photo/Sang Tan)
Associated Press
A visitor looks at an installation 'Calavera' by Argentinean collective Mondongo, on display at an exhibition 'Death : The Richard Harris Collection' at the Wellcome Collection gallery in London, Wednesday, Nov. 14, 2012. (AP Photo/Sang Tan)
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