By using somatic cells in which only one or two genes among {HEAD ~ the three kinds} of the gene Oct3/4, Klf4, and c Myc are expressed, the other gene products which can function as a nuclear reprogramming factor can be identified by, for example, performing screening for a gene product which can induce nuclear reprogramming of {TAIL ~ said cells} 
By using somatic cells in which only one or two genes among { HEAD ~ the three kinds } of the gene Oct3/4 , Klf4 , and c Myc are expressed , the other gene products which can function as a nuclear reprogramming factor can be identified by , for example , performing screening for a gene product which can induce nuclear reprogramming of { TAIL ~ said cells }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL