Kpọmkwem 40 afọ gara aga, onye meriri ihe nrite Nobel n'ọdịnihu bụ Martin Evans bipụtara ọmụmụ ya gbasara mkpụrụ ndụ embrayo embrayo na ikike ahụike ha [1]. Nnyocha ya gbanwere biomedicine, dị ka ọ na-atụ anya ọdịnihu, nke anụ ahụ ọ bụla mebiri emebi nwere ike dochie nke ọhụrụ, toro na vitro site na