2013-12-18T17:41:55.304Z 2016-06-22T22:10:44.668Z https://orcid.org/0000-0002-9591-4993 0000-0002-9591-4993 orcid.org Mario Capecchi Investigator 1988 2015 07 31 Howard Hughes Medical Institute Chevy Chase MD US 2405 RINGGOLD