A na-ekewa ndị na-enye ọbara n'ìgwè dị iche iche dabere na onye ga-anata ọbara a na-anakọta. A na-akpọ 'allogeneic' (nke a na-akpọkwa 'homologous') onyinye mgbe onye na-enye ọbara na-enye ọbara maka nchekwa na ụlọ akụ ọbara maka mmịnye onye a na-amaghị. A na-akpọ 'directed' onyinye mgbe mmadụ, mgbe mgbe onye òtù ezinụlọ, na-enye ọbara maka mmịnye ọbara nye onye a kapịrị ọnụ. A na-eji onyinye a na-eduzi eme ihe mgbe ọ dị obere mgbe a na-enye onyinye. A na-enye onyinye 'onye na-enye onyinye' bụ ngwakọ nke abụọ ma bụrụ ihe a na-ahụkarị na mba ndị na-emepe emepe dị ka Ghana. N'ọnọdụ a, enyi ma ọ bụ onye òtù ezinụlọ nke onye na-enweta ọbara na-enye ọbara iji dochie ọbara echekwara na mmịnye ọbara, na-eme ka a na-enye ihe na-agbanwe agbanwe. Mgbe mmadụ nwere ọbara echekwara nke a ga-enyeghachi onye na-enye ya n'oge na-adịghị anya, a na-akpọkarị '
homologous