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Last updateWed, 01 Oct 2014 1pm

Chemistry Among Friends - ABC News (video)

Could you be genetically linked to your closest friends?

 

http://abcnews.go.com/Health/video/chemistry-friends-genetically-linked-genetics-close-friends-connections-relationships-health-12641005?tab=9482931&section=1206835&playlist=3547557&page=1