Mario R. Capecchi , Martin J. Evans and Oliver Smithies were declared laureates of the 2007 Nobel Prize in Physiology or Medicine for their work on `` principles for introducing specific gene modifications in mice by the use of embryonic stem cells '' , or gene targeting .
Mario R. Capecchi , Martin J. Evans and Oliver Smithies were awarded the 2007 Nobel Prize in Physiology or Medicine for their work on `` principles for introducing specific gene modifications in mice by the use of embryonic stem cells '' , in other words , gene targeting .