14539863 fffd9d07e9aea6fc4b9ae79bf9cd9621 mhahnel http://gravatar.com/mhahnel mhahnel http://1.gravatar.com/avatar/fffd9d07e9aea6fc4b9ae79bf9cd9621 http://1.gravatar.com/avatar/fffd9d07e9aea6fc4b9ae79bf9cd9621 thumbnail Mark Hahnel Mark Hahnel mhahnel PhD student studying stem cell mobilisation at Imperial. London http://www.science2point0.com http://www.ipscellnews.com